feat(skill): 新增攻击技能预制体并重构现有资源

- 新增 atk、arrow、ice_t、atk_fire、atk_light、ball_light-001 等技能预制体
- 删除 atk_f1、atk_f2、atk_s1、atk_ice、ball_guang、ball_light、arrow_green 等旧预制体
- 重构 arrow_red、arrow_blue、atk_s4 预制体，简化节点结构
- 调整 atk04.anim 动画的 wrapMode 为一次播放
- 优化 ball_sred.anim 动画的采样率和关键帧
- 统一技能组件配置，移除冗余节点和组件

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

@@ -20,31 +20,28 @@
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@@ -77,14 +74,14 @@
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@@ -98,8 +95,8 @@
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@@ -137,145 +134,6 @@
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@@ -298,11 +156,11 @@
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@@ -363,7 +221,7 @@
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@@ -391,7 +249,7 @@
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@@ -420,7 +278,7 @@
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@@ -441,7 +299,7 @@
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