feat(武器系统): 新增红水晶武器及相关资源

添加红水晶武器系统，包括武器、子弹、特效和音效资源
- 新增红水晶武器脚本及场景，实现爆炸伤害功能
- 添加红水晶子弹逻辑，支持半径爆炸效果
- 加入红水晶爆炸特效和音效
- 更新角色武器库包含红水晶武器
- 调整现有水晶武器描述和数值
- 扩展子弹基类支持首帧回调
- 更新特效控制器支持音效播放等待

resources/sounds/effect/crystal.mp3.import

@@ -0,0 +1,19 @@
+[remap]
+
+importer="mp3"
+type="AudioStreamMP3"
+uid="uid://dnv73q6g00vuo"
+path="res://.godot/imported/crystal.mp3-16c4912a4753d8f726349a830585555a.mp3str"
+
+[deps]
+
+source_file="res://resources/sounds/effect/crystal.mp3"
+dest_files=["res://.godot/imported/crystal.mp3-16c4912a4753d8f726349a830585555a.mp3str"]
+
+[params]
+
+loop=false
+loop_offset=0
+bpm=0
+beat_count=0
+bar_beats=4

resources/weapons/red-crystal.png.import

@@ -0,0 +1,40 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://s8r37cmth6o8"
+path="res://.godot/imported/red-crystal.png-67abc7ab55282ddcb27f35f1d1767715.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://resources/weapons/red-crystal.png"
+dest_files=["res://.godot/imported/red-crystal.png-67abc7ab55282ddcb27f35f1d1767715.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/uastc_level=0
+compress/rdo_quality_loss=0.0
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/channel_remap/red=0
+process/channel_remap/green=1
+process/channel_remap/blue=2
+process/channel_remap/alpha=3
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1