feat: 新增水球技能并调整英雄技能配置

- 新增水球技能资源文件、动画及配置项
- 调整盾战士、圣骑士、牧师等英雄的技能触发条件
- 更新技能说明文档，补充攻击类型和特殊效果描述
- 微调技能准备动画的垂直位置
- 为护盾buff动画添加新的精灵帧序列

assets/resources/game/skill/anm/atk/ball_water.anim

@@ -0,0 +1,100 @@
+[
+  {
+    "__type__": "cc.AnimationClip",
+    "_name": "ball_water",
+    "_objFlags": 0,
+    "__editorExtras__": {
+      "embeddedPlayerGroups": []
+    },
+    "_native": "",
+    "sample": 12,
+    "speed": 1,
+    "wrapMode": 2,
+    "enableTrsBlending": false,
+    "_duration": 0.3333333333333333,
+    "_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": "Node"
+  },
+  {
+    "__type__": "cc.animation.ComponentPath",
+    "component": "cc.Sprite"
+  },
+  {
+    "__type__": "cc.animation.Channel",
+    "_curve": {
+      "__id__": 6
+    }
+  },
+  {
+    "__type__": "cc.ObjectCurve",
+    "_times": [
+      0,
+      0.08333333333333333,
+      0.16666666666666666,
+      0.25
+    ],
+    "_values": [
+      {
+        "__uuid__": "3d46f945-3f07-477e-a95a-b49557d552c6@59cfc",
+        "__expectedType__": "cc.SpriteFrame"
+      },
+      {
+        "__uuid__": "3d46f945-3f07-477e-a95a-b49557d552c6@b5811",
+        "__expectedType__": "cc.SpriteFrame"
+      },
+      {
+        "__uuid__": "3d46f945-3f07-477e-a95a-b49557d552c6@bb70c",
+        "__expectedType__": "cc.SpriteFrame"
+      },
+      {
+        "__uuid__": "3d46f945-3f07-477e-a95a-b49557d552c6@b6fe2",
+        "__expectedType__": "cc.SpriteFrame"
+      }
+    ]
+  },
+  {
+    "__type__": "cc.AnimationClipAdditiveSettings",
+    "enabled": false,
+    "refClip": null
+  }
+]

assets/resources/game/skill/anm/atk/ball_water.anim.meta

@@ -0,0 +1,13 @@
+{
+  "ver": "2.0.3",
+  "importer": "animation-clip",
+  "imported": true,
+  "uuid": "5265fa87-fcc8-44ee-8235-9148cbe268fb",
+  "files": [
+    ".cconb"
+  ],
+  "subMetas": {},
+  "userData": {
+    "name": "ball_water"
+  }
+}