Refactor and clean up game assets and editor modules

- Deleted unused weapon and enemy stat assets to streamline project.
- Updated player form assets to reference new default weapon IDs.
- Enhanced DataHub editor UI for better usability, including improved tab management and detail views.
- Removed icon references in various editor modules to simplify the interface.
- Added new boss skill assets and corresponding metadata for future development.
- Created new folders and metadata for organizing boss-related assets, skills, and stats.
- Implemented a new skill asset with updated properties for better gameplay mechanics.

Assets/_Game/Scripts/Editor/Modules/BossSkillModule.cs

@@ -17,7 +17,7 @@ namespace BaseGames.Editor.Modules
 
         public string ModuleId    => "boss";
         public string DisplayName => "Boss技能";
-        public string IconName    => "d_SkinnedMeshRenderer Icon";
+        public string IconName    => null;
 
         private int _activeTab = 0;