add skinpart enum

src/types/player/player.ts

@@ -45,9 +45,15 @@ type Skin = {
   /**
    * The parts of the skin.
    */
-  parts: Record<string, string>;
+  parts: Record<SkinPart, string>;
 };
 
+enum SkinPart {
+  HEAD = "head",
+  FACE = "face",
+  BODY = "body",
+}
+
 enum Model {
   DEFAULT,
   SLIM,