Move to paperweight v2

Co-authored-by: Nassim Jahnke <nassim@njahnke.dev>

.gitignore

@@ -28,20 +28,6 @@ bin/
 dist/
 manifest.mf
 
-/work/Temp/
-work/1.*
-work/Minecraft
-work/BuildData
-work/Bukkit
-work/CraftBukkit
-work/Paperclip
-work/Spigot
-work/Spigot-Server
-work/Spigot-API
-work/*.jar
-work/test-server
-work/ForgeFlower
-
 # Mac filesystem dust
 .DS_Store/
 .DS_Store
@@ -63,14 +49,10 @@ out/
 run/
 logs/
 
-Paper-Server
-Paper-API
-Paperclip.jar
-paperclip.jar
-paperclip-*.jar
-paperclip.properties
-
 !gradle/wrapper/gradle-wrapper.jar
 
 test-plugin.settings.gradle.kts
 paper-api-generator.settings.gradle.kts
+
+# Don't track patched vanilla submodules
+paper-server/src/vanilla/