feat(角色): 更新熊角色资源与攻击逻辑

添加新的熊角色贴图和遮罩资源
实现新的攻击类型7并调整现有攻击逻辑
优化动画和碰撞体设置
移除旧的SVG资源文件

resources/characters/bear/bear-walk-e.svg.import

@@ -1,37 +0,0 @@
-[remap]
-
-importer="texture"
-type="CompressedTexture2D"
-uid="uid://d2mwi15jqmnek"
-path="res://.godot/imported/bear-walk-e.svg-df8abec6a38d36c2076db4429144f119.ctex"
-metadata={
-"vram_texture": false
-}
-
-[deps]
-
-source_file="res://resources/characters/bear/bear-walk-e.svg"
-dest_files=["res://.godot/imported/bear-walk-e.svg-df8abec6a38d36c2076db4429144f119.ctex"]
-
-[params]
-
-compress/mode=0
-compress/high_quality=false
-compress/lossy_quality=0.7
-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/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
-svg/scale=1.0
-editor/scale_with_editor_scale=false
-editor/convert_colors_with_editor_theme=false