feat(skill): 添加新技能资源并调整动画参数

添加多个新技能动画、预制体及其元数据文件，包括黄色准备动画、大型火球攻击动画、buff_dian动画和风球攻击动画。
同时删除旧的 ball_sgreen 动画和 ball_light-001 预制体。
调整多个现有动画的采样率和持续时间以优化播放效果。
在技能图集中添加新的箭头精灵帧。
微调英雄 hm2 的缩放比例。

assets/resources/game/skill/anm/buff/buff_dian.anim

@@ -0,0 +1,135 @@
+[
+  {
+    "__type__": "cc.AnimationClip",
+    "_name": "buff_dian",
+    "_objFlags": 0,
+    "__editorExtras__": {
+      "embeddedPlayerGroups": []
+    },
+    "_native": "",
+    "sample": 20,
+    "speed": 1,
+    "wrapMode": 2,
+    "enableTrsBlending": false,
+    "_duration": 0.55,
+    "_hash": 500763545,
+    "_tracks": [
+      {
+        "__id__": 1
+      }
+    ],
+    "_exoticAnimation": null,
+    "_events": [],
+    "_embeddedPlayers": [],
+    "_additiveSettings": {
+      "__id__": 7
+    },
+    "_auxiliaryCurveEntries": []
+  },
+  {
+    "__type__": "cc.animation.ObjectTrack",
+    "_binding": {
+      "__type__": "cc.animation.TrackBinding",
+      "path": {
+        "__id__": 2
+      },
+      "proxy": null
+    },
+    "_channel": {
+      "__id__": 5
+    }
+  },
+  {
+    "__type__": "cc.animation.TrackPath",
+    "_paths": [
+      {
+        "__id__": 3
+      },
+      {
+        "__id__": 4
+      },
+      "spriteFrame"
+    ]
+  },
+  {
+    "__type__": "cc.animation.HierarchyPath",
+    "path": "skill"
+  },
+  {
+    "__type__": "cc.animation.ComponentPath",
+    "component": "cc.Sprite"
+  },
+  {
+    "__type__": "cc.animation.Channel",
+    "_curve": {
+      "__id__": 6
+    }
+  },
+  {
+    "__type__": "cc.ObjectCurve",
+    "_times": [
+      0,
+      0.05,
+      0.1,
+      0.15,
+      0.2,
+      0.25,
+      0.3,
+      0.35,
+      0.4,
+      0.45,
+      0.5
+    ],
+    "_values": [
+      {
+        "__uuid__": "2423272e-e63b-4736-b15b-30b40cf98a23@9d0f8",
+        "__expectedType__": "cc.SpriteFrame"
+      },
+      {
+        "__uuid__": "2423272e-e63b-4736-b15b-30b40cf98a23@63128",
+        "__expectedType__": "cc.SpriteFrame"
+      },
+      {
+        "__uuid__": "2423272e-e63b-4736-b15b-30b40cf98a23@967c2",
+        "__expectedType__": "cc.SpriteFrame"
+      },
+      {
+        "__uuid__": "2423272e-e63b-4736-b15b-30b40cf98a23@6d141",
+        "__expectedType__": "cc.SpriteFrame"
+      },
+      {
+        "__uuid__": "2423272e-e63b-4736-b15b-30b40cf98a23@0bb65",
+        "__expectedType__": "cc.SpriteFrame"
+      },
+      {
+        "__uuid__": "2423272e-e63b-4736-b15b-30b40cf98a23@77d6e",
+        "__expectedType__": "cc.SpriteFrame"
+      },
+      {
+        "__uuid__": "2423272e-e63b-4736-b15b-30b40cf98a23@e0f6a",
+        "__expectedType__": "cc.SpriteFrame"
+      },
+      {
+        "__uuid__": "2423272e-e63b-4736-b15b-30b40cf98a23@47f4b",
+        "__expectedType__": "cc.SpriteFrame"
+      },
+      {
+        "__uuid__": "2423272e-e63b-4736-b15b-30b40cf98a23@a2da5",
+        "__expectedType__": "cc.SpriteFrame"
+      },
+      {
+        "__uuid__": "2423272e-e63b-4736-b15b-30b40cf98a23@2c207",
+        "__expectedType__": "cc.SpriteFrame"
+      },
+      {
+        "__uuid__": "2423272e-e63b-4736-b15b-30b40cf98a23@9b6b4",
+        "__expectedType__": "cc.SpriteFrame"
+      }
+    ]
+  },
+  {
+    "__type__": "cc.AnimationClipAdditiveSettings",
+    "enabled": false,
+    "refClip": null
+  }
+]