Apply and enforce import ordering rules

By: md_5 <git@md-5.net>

paper-api/src/main/java/org/bukkit/block/Banner.java

@@ -1,11 +1,10 @@
 package org.bukkit.block;
 
+import java.util.List;
 import org.bukkit.DyeColor;
 import org.bukkit.block.banner.Pattern;
 import org.jetbrains.annotations.NotNull;
 
-import java.util.List;
-
 /**
  * Represents a captured state of a banner.
  */

paper-api/src/main/java/org/bukkit/block/Block.java

@@ -1,7 +1,6 @@
 package org.bukkit.block;
 
 import java.util.Collection;
-
 import org.bukkit.Chunk;
 import org.bukkit.FluidCollisionMode;
 import org.bukkit.Location;

paper-api/src/main/java/org/bukkit/block/PistonMoveReaction.java

@@ -1,9 +1,8 @@
 package org.bukkit.block;
 
-import org.jetbrains.annotations.Nullable;
-
 import java.util.HashMap;
 import java.util.Map;
+import org.jetbrains.annotations.Nullable;
 
 /**
  * Represents how a block or entity will react when interacting with a piston

paper-api/src/main/java/org/bukkit/block/banner/PatternType.java

@@ -1,11 +1,10 @@
 package org.bukkit.block.banner;
 
-import org.jetbrains.annotations.Contract;
-import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
-
 import java.util.HashMap;
 import java.util.Map;
+import org.jetbrains.annotations.Contract;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
 public enum PatternType {
     BASE("b"),

paper-api/src/main/java/org/bukkit/block/data/Rail.java

@@ -1,8 +1,7 @@
 package org.bukkit.block.data;
 
-import org.jetbrains.annotations.NotNull;
-
 import java.util.Set;
+import org.jetbrains.annotations.NotNull;
 
 /**
  * 'shape' represents the current layout of a minecart rail.