feat(skill): 新增闪电斩技能6103的动画与配置

1.  更新技能配置表中闪电斩的sp名称为atk6
2.  为atk2/atk3/atk5/atk6添加完整的动画帧与预制体
3.  调整各技能动画时长与攻击帧触发时机

assets/resources/game/skill/atk/atk2.prefab

@@ -20,28 +20,31 @@
     "_children": [
       {
         "__id__": 2
+      },
+      {
+        "__id__": 8
       }
     ],
     "_active": true,
     "_components": [
-      {
-        "__id__": 8
-      },
-      {
-        "__id__": 10
-      },
-      {
-        "__id__": 12
-      },
       {
         "__id__": 14
       },
       {
         "__id__": 16
+      },
+      {
+        "__id__": 18
+      },
+      {
+        "__id__": 20
+      },
+      {
+        "__id__": 22
       }
     ],
     "_prefab": {
-      "__id__": 18
+      "__id__": 24
     },
     "_lpos": {
       "__type__": "cc.Vec3",
@@ -211,6 +214,139 @@
     "targetOverrides": null,
     "nestedPrefabInstanceRoots": null
   },
+  {
+    "__type__": "cc.Node",
+    "_name": "slash-horizontal1",
+    "_objFlags": 0,
+    "__editorExtras__": {},
+    "_parent": {
+      "__id__": 1
+    },
+    "_children": [],
+    "_active": true,
+    "_components": [
+      {
+        "__id__": 9
+      },
+      {
+        "__id__": 11
+      }
+    ],
+    "_prefab": {
+      "__id__": 13
+    },
+    "_lpos": {
+      "__type__": "cc.Vec3",
+      "x": 0,
+      "y": 0,
+      "z": 0
+    },
+    "_lrot": {
+      "__type__": "cc.Quat",
+      "x": 0,
+      "y": 0,
+      "z": 0,
+      "w": 1
+    },
+    "_lscale": {
+      "__type__": "cc.Vec3",
+      "x": 2,
+      "y": 2,
+      "z": 1
+    },
+    "_mobility": 0,
+    "_layer": 1073741824,
+    "_euler": {
+      "__type__": "cc.Vec3",
+      "x": 0,
+      "y": 0,
+      "z": 0
+    },
+    "_id": ""
+  },
+  {
+    "__type__": "cc.UITransform",
+    "_name": "",
+    "_objFlags": 0,
+    "__editorExtras__": {},
+    "node": {
+      "__id__": 8
+    },
+    "_enabled": true,
+    "__prefab": {
+      "__id__": 10
+    },
+    "_contentSize": {
+      "__type__": "cc.Size",
+      "width": 95,
+      "height": 48
+    },
+    "_anchorPoint": {
+      "__type__": "cc.Vec2",
+      "x": 0.5,
+      "y": 0.5
+    },
+    "_id": ""
+  },
+  {
+    "__type__": "cc.CompPrefabInfo",
+    "fileId": "0aybWnCBJDBb3WOXwo/YxC"
+  },
+  {
+    "__type__": "cc.Sprite",
+    "_name": "",
+    "_objFlags": 0,
+    "__editorExtras__": {},
+    "node": {
+      "__id__": 8
+    },
+    "_enabled": true,
+    "__prefab": {
+      "__id__": 12
+    },
+    "_customMaterial": null,
+    "_srcBlendFactor": 2,
+    "_dstBlendFactor": 4,
+    "_color": {
+      "__type__": "cc.Color",
+      "r": 255,
+      "g": 255,
+      "b": 255,
+      "a": 255
+    },
+    "_spriteFrame": null,
+    "_type": 0,
+    "_fillType": 0,
+    "_sizeMode": 1,
+    "_fillCenter": {
+      "__type__": "cc.Vec2",
+      "x": 0,
+      "y": 0
+    },
+    "_fillStart": 0,
+    "_fillRange": 0,
+    "_isTrimmedMode": true,
+    "_useGrayscale": false,
+    "_atlas": null,
+    "_id": ""
+  },
+  {
+    "__type__": "cc.CompPrefabInfo",
+    "fileId": "45iYWOPyBCNKkmXE+dmADF"
+  },
+  {
+    "__type__": "cc.PrefabInfo",
+    "root": {
+      "__id__": 1
+    },
+    "asset": {
+      "__id__": 0
+    },
+    "fileId": "bdI0RFo3VCNKhgFojxldzA",
+    "instance": null,
+    "targetOverrides": null,
+    "nestedPrefabInstanceRoots": null
+  },
   {
     "__type__": "cc.UITransform",
     "_name": "",
@@ -221,7 +357,7 @@
     },
     "_enabled": true,
     "__prefab": {
-      "__id__": 9
+      "__id__": 15
     },
     "_contentSize": {
       "__type__": "cc.Size",
@@ -249,7 +385,7 @@
     },
     "_enabled": true,
     "__prefab": {
-      "__id__": 11
+      "__id__": 17
     },
     "atk_x": 20,
     "atk_y": 40,
@@ -261,6 +397,10 @@
     "forceStartX": -1,
     "forceStartY": -1,
     "summon_count": 1,
+    "summon_target_mode": 0,
+    "summon_x_offset": 0,
+    "summon_y_offset": 0,
+    "summon_interval": 0,
     "height_offset": 0,
     "_id": ""
   },
@@ -278,7 +418,7 @@
     },
     "_enabled": true,
     "__prefab": {
-      "__id__": 13
+      "__id__": 19
     },
     "enabledContactListener": true,
     "bullet": false,
@@ -312,7 +452,7 @@
     },
     "_enabled": true,
     "__prefab": {
-      "__id__": 15
+      "__id__": 21
     },
     "tag": 0,
     "_group": 1,
@@ -346,7 +486,7 @@
     },
     "_enabled": true,
     "__prefab": {
-      "__id__": 17
+      "__id__": 23
     },
     "playOnLoad": true,
     "_clips": [