Refactor skinParts initialization order

Reordered the skinParts field initialization to comply with standard Java practice of placing final fields below non-final fields. This improves code readability and consistency across the class structure.

src/main/java/net/thenextlvl/character/plugin/character/PaperPlayerCharacter.java

@@ -49,10 +49,10 @@
 
 @NullMarked
 public class PaperPlayerCharacter extends PaperCharacter<Player> implements PlayerCharacter {
+    private SkinParts skinParts = new PaperSkinPartBuilder().build();
     private boolean listed = false;
     private boolean realPlayer = false;
     private final CraftPlayerProfile profile;
-    private SkinParts skinParts = new PaperSkinPartBuilder().build();
 
     public PaperPlayerCharacter(CharacterPlugin plugin, String name, UUID uuid) {
         super(plugin, name, EntityType.PLAYER);