Improve mid tick chunk loading, Fix Oversleep, other improvements

Process loads outside of any canSleep check. Original intent was to
only apply those restrictions to generations but realized I had some
checks higher up the call chain.

Reworked the back off strategy to just run every 1 millisecond per world,
and to apply the per tick limit to generations only.

This guarantees that your chunk will load with at most around 1ms delay.

Additionally, fire midTick processing in a few more places, notably the
oversleep section so we can keep processing loads here too which has
a large up to 50ms window...

Speaking of oversleep, we had a bug in our implementation changes for
Timings that caused oversleep to not sleep the correct amount.

Because we now moved it into the NEXT tick instead of THIS tick, the
value of nextTick had already been increased to +50ms, resulting in
the risk of sleeping more than it should, but, more importantly, this
caused every task that was trying to NOT run during oversleep to actually
run during oversleep.

This is now fixed.

Another small tweak is to the /tps command, to no longer show the star when
TPS is right at 20.

Due to ineffeciencies in the sleep precision, TPS is commonly 20.02.
This causes the star to show up almost constantly, so now only show it if
we actually hit a real "catchup".

This commit also improves the changes to the CallbackExecutor, in that
it now is also recursion safe.

It was possible that the executor could run tasks out of desired order
if the executor task scheduled more executor tasks.

We solve this by ensuring new additions do not enter the currently iterated queue.

Each depth level will have its own queue.

Fixes #3220

Spigot-Server-Patches/Use-TerminalConsoleAppender-for-console-improvements.patch

@@ -19,7 +19,7 @@ Other changes:
     configuration
 
 diff --git a/pom.xml b/pom.xml
-index 3dc6c2a3..b1f00873 100644
+index 3dc6c2a3f5..b1f008738b 100644
 --- a/pom.xml
 +++ b/pom.xml
 @@ -0,0 +0,0 @@
@@ -75,7 +75,7 @@ index 3dc6c2a3..b1f00873 100644
                  <groupId>org.apache.maven.plugins</groupId>
 diff --git a/src/main/java/com/destroystokyo/paper/console/PaperConsole.java b/src/main/java/com/destroystokyo/paper/console/PaperConsole.java
 new file mode 100644
-index 00000000..cd6e2592
+index 0000000000..cd6e259239
 --- /dev/null
 +++ b/src/main/java/com/destroystokyo/paper/console/PaperConsole.java
 @@ -0,0 +0,0 @@
@@ -121,7 +121,7 @@ index 00000000..cd6e2592
 +}
 diff --git a/src/main/java/com/destroystokyo/paper/console/TerminalConsoleCommandSender.java b/src/main/java/com/destroystokyo/paper/console/TerminalConsoleCommandSender.java
 new file mode 100644
-index 00000000..685deaa0
+index 0000000000..685deaa0e5
 --- /dev/null
 +++ b/src/main/java/com/destroystokyo/paper/console/TerminalConsoleCommandSender.java
 @@ -0,0 +0,0 @@
@@ -143,7 +143,7 @@ index 00000000..685deaa0
 +
 +}
 diff --git a/src/main/java/net/minecraft/server/DedicatedServer.java b/src/main/java/net/minecraft/server/DedicatedServer.java
-index 4b1f8c53..d34f772f 100644
+index 4b1f8c5373..d34f772fae 100644
 --- a/src/main/java/net/minecraft/server/DedicatedServer.java
 +++ b/src/main/java/net/minecraft/server/DedicatedServer.java
 @@ -0,0 +0,0 @@ public class DedicatedServer extends MinecraftServer implements IMinecraftServer
@@ -185,7 +185,7 @@ index 4b1f8c53..d34f772f 100644
          System.setOut(new PrintStream(new LoggerOutputStream(logger, Level.INFO), true));
          System.setErr(new PrintStream(new LoggerOutputStream(logger, Level.WARN), true));
 diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
-index af2fa93d..94f9201f 100644
+index 8d6a089007..284793e4bf 100644
 --- a/src/main/java/net/minecraft/server/MinecraftServer.java
 +++ b/src/main/java/net/minecraft/server/MinecraftServer.java
 @@ -0,0 +0,0 @@ import org.apache.commons.lang3.Validate;
@@ -244,7 +244,7 @@ index af2fa93d..94f9201f 100644
  
      public KeyPair getKeyPair() {
 diff --git a/src/main/java/net/minecraft/server/PlayerList.java b/src/main/java/net/minecraft/server/PlayerList.java
-index 56266a77..77f1ddc8 100644
+index 56266a7729..77f1ddc8a8 100644
 --- a/src/main/java/net/minecraft/server/PlayerList.java
 +++ b/src/main/java/net/minecraft/server/PlayerList.java
 @@ -0,0 +0,0 @@ public abstract class PlayerList {
@@ -258,7 +258,7 @@ index 56266a77..77f1ddc8 100644
  
          this.k = new GameProfileBanList(PlayerList.b);
 diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
-index 2e0f443d..742c2148 100644
+index 2e0f443d9f..742c21480a 100644
 --- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
 +++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
 @@ -0,0 +0,0 @@ import java.util.logging.Level;
@@ -284,7 +284,7 @@ index 2e0f443d..742c2148 100644
      @Override
      public PluginCommand getPluginCommand(String name) {
 diff --git a/src/main/java/org/bukkit/craftbukkit/Main.java b/src/main/java/org/bukkit/craftbukkit/Main.java
-index 93fcfd5f..0e76e346 100644
+index 93fcfd5f39..0e76e34664 100644
 --- a/src/main/java/org/bukkit/craftbukkit/Main.java
 +++ b/src/main/java/org/bukkit/craftbukkit/Main.java
 @@ -0,0 +0,0 @@ import java.util.logging.Logger;
@@ -335,7 +335,7 @@ index 93fcfd5f..0e76e346 100644
              } catch (Throwable t) {
 diff --git a/src/main/java/org/bukkit/craftbukkit/command/ColouredConsoleSender.java b/src/main/java/org/bukkit/craftbukkit/command/ColouredConsoleSender.java
 deleted file mode 100644
-index fdf2f075..00000000
+index fdf2f075e2..0000000000
 --- a/src/main/java/org/bukkit/craftbukkit/command/ColouredConsoleSender.java
 +++ /dev/null
 @@ -0,0 +0,0 @@
@@ -412,7 +412,7 @@ index fdf2f075..00000000
 -    }
 -}
 diff --git a/src/main/java/org/bukkit/craftbukkit/command/ConsoleCommandCompleter.java b/src/main/java/org/bukkit/craftbukkit/command/ConsoleCommandCompleter.java
-index befcc19f..5510266f 100644
+index befcc19f9b..5510266fb1 100644
 --- a/src/main/java/org/bukkit/craftbukkit/command/ConsoleCommandCompleter.java
 +++ b/src/main/java/org/bukkit/craftbukkit/command/ConsoleCommandCompleter.java
 @@ -0,0 +0,0 @@ import java.util.Collections;
@@ -495,7 +495,7 @@ index befcc19f..5510266f 100644
      }
  }
 diff --git a/src/main/java/org/bukkit/craftbukkit/util/ServerShutdownThread.java b/src/main/java/org/bukkit/craftbukkit/util/ServerShutdownThread.java
-index 70f8d429..449e99d1 100644
+index 70f8d42992..449e99d1b6 100644
 --- a/src/main/java/org/bukkit/craftbukkit/util/ServerShutdownThread.java
 +++ b/src/main/java/org/bukkit/craftbukkit/util/ServerShutdownThread.java
 @@ -0,0 +0,0 @@ public class ServerShutdownThread extends Thread {
@@ -509,7 +509,7 @@ index 70f8d429..449e99d1 100644
          }
 diff --git a/src/main/java/org/bukkit/craftbukkit/util/TerminalConsoleWriterThread.java b/src/main/java/org/bukkit/craftbukkit/util/TerminalConsoleWriterThread.java
 deleted file mode 100644
-index 99564fed..00000000
+index 99564fed7c..0000000000
 --- a/src/main/java/org/bukkit/craftbukkit/util/TerminalConsoleWriterThread.java
 +++ /dev/null
 @@ -0,0 +0,0 @@
@@ -573,13 +573,13 @@ index 99564fed..00000000
 -}
 diff --git a/src/main/resources/log4j2.component.properties b/src/main/resources/log4j2.component.properties
 new file mode 100644
-index 00000000..0694b214
+index 0000000000..0694b21465
 --- /dev/null
 +++ b/src/main/resources/log4j2.component.properties
 @@ -0,0 +1 @@
 +log4j.skipJansi=true
 diff --git a/src/main/resources/log4j2.xml b/src/main/resources/log4j2.xml
-index 722ca849..620b9490 100644
+index 722ca84968..620b9490e5 100644
 --- a/src/main/resources/log4j2.xml
 +++ b/src/main/resources/log4j2.xml
 @@ -0,0 +0,0 @@