Add skins to the giveall command

Example usage: `!giveall skins`

Description: Gives all non-basic/non-ascension skins for trekkers owned by the target player. Requires handbook generation to be enabled.

src/main/java/emu/nebula/data/resources/CharacterSkinDef.java

@@ -3,6 +3,7 @@ package emu.nebula.data.resources;
 import emu.nebula.data.BaseDef;
 import emu.nebula.data.ResourceType;
 import lombok.Getter;
+import lombok.Setter;
 
 @Getter
 @ResourceType(name = "CharacterSkin.json")
@@ -11,6 +12,9 @@ public class CharacterSkinDef extends BaseDef {
     private int CharId;
     private int Type;
     
+    @Setter
+    private transient boolean released;
+    
     @Override
     public int getId() {
         return Id;