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/Data/Progression/Skills/SKL_New.asset

@@ -1,46 +0,0 @@
-%YAML 1.1
-%TAG !u! tag:unity3d.com,2011:
---- !u!114 &11400000
-MonoBehaviour:
-  m_ObjectHideFlags: 0
-  m_CorrespondingSourceObject: {fileID: 0}
-  m_PrefabInstance: {fileID: 0}
-  m_PrefabAsset: {fileID: 0}
-  m_GameObject: {fileID: 0}
-  m_Enabled: 1
-  m_EditorHideFlags: 0
-  m_Script: {fileID: 11500000, guid: a96f0270221c8444b8719f0f9b14c635, type: 3}
-  m_Name: SKL_New
-  m_EditorClassIdentifier: 
-  skillId: 
-  displayNameKey: 
-  descriptionKey: 
-  icon: {fileID: 0}
-  resourceType: 1
-  baseCost: 0
-  cooldown: 0
-  castAnimation:
-    _FadeDuration: 0.25
-    _Speed: 1
-    _Events:
-      _NormalizedTimes: []
-      _Callbacks: []
-      _Names: []
-    _Clip: {fileID: 0}
-    _NormalizedStartTime: NaN
-  castLockDuration: 0
-  effectType: 1
-  damageSource: {fileID: 0}
-  projectileConfig: {fileID: 0}
-  isHoming: 0
-  holdForContinuous: 0
-  dashForce: 0
-  dashDuration: 0
-  isInvincibleDuringDash: 0
-  explosionDelay: 0
-  explosionRadius: 0
-  castFeedback: {fileID: 0}
-  SkillHitBoxPrefab: {fileID: 0}
-  references:
-    version: 2
-    RefIds: []

Assets/_Game/Data/Progression/Skills/SKL_New.asset.meta

@@ -1,8 +0,0 @@
-fileFormatVersion: 2
-guid: d00e0d6104f281345b8978d3a72eed13
-NativeFormatImporter:
-  externalObjects: {}
-  mainObjectFileID: 11400000
-  userData: 
-  assetBundleName: 
-  assetBundleVariant: