Add a "should burn in sunlight" API for Phantoms and Skeletons

paper-server/src/main/java/org/bukkit/craftbukkit/entity/CraftAbstractSkeleton.java

@@ -20,4 +20,15 @@ public abstract class CraftAbstractSkeleton extends CraftMonster implements Abst
         return (net.minecraft.world.entity.monster.AbstractSkeleton) super.getHandle();
     }
     // Paper end
+    // Paper start
+    @Override
+    public boolean shouldBurnInDay() {
+        return getHandle().shouldBurnInDay();
+    }
+
+    @Override
+    public void setShouldBurnInDay(boolean shouldBurnInDay) {
+        getHandle().setShouldBurnInDay(shouldBurnInDay);
+    }
+    // Paper end
 }

paper-server/src/main/java/org/bukkit/craftbukkit/entity/CraftPhantom.java

@@ -34,5 +34,15 @@ public class CraftPhantom extends CraftFlying implements Phantom, CraftEnemy {
     public java.util.UUID getSpawningEntity() {
         return getHandle().getSpawningEntity();
     }
+
+    @Override
+    public boolean shouldBurnInDay() {
+        return getHandle().shouldBurnInDay();
+    }
+
+    @Override
+    public void setShouldBurnInDay(boolean shouldBurnInDay) {
+        getHandle().setShouldBurnInDay(shouldBurnInDay);
+    }
     // Paper end
 }