[Bleeding] Added DamageCause.POISON/MAGIC and RegainReason.MAGIC/MAGIC_REGEN for potions

By: Zeerix <zeerix@draig.de>

paper-api/src/main/java/org/bukkit/event/entity/EntityDamageEvent.java

@@ -167,6 +167,18 @@ public class EntityDamageEvent extends EntityEvent implements Cancellable {
          * Damage: 1
          */
         STARVATION,
+        /**
+         * Damage caused due to an ongoing poison effect
+         *
+         * Damage: 1
+         */
+        POISON,
+        /**
+         * Damage caused by being hit by a damage potion or spell
+         *
+         * Damage: variable
+         */
+        MAGIC,
         /**
          * Custom damage.
          * <p />

paper-api/src/main/java/org/bukkit/event/entity/EntityRegainHealthEvent.java

@@ -83,6 +83,14 @@ public class EntityRegainHealthEvent extends EntityEvent implements Cancellable
          * When a player regains health from eating consumables
          */
         EATING,
+        /**
+         * When a player is healed by a potion or spell
+         */
+        MAGIC,
+        /**
+         * When a player is healed over time by a potion or spell
+         */
+        MAGIC_REGEN,
         /**
          * Any other reason not covered by the reasons above
          */