feat(武器): 添加彩虹猫之刃武器及相关资源

添加彩虹猫之刃武器，包含以下内容：
- 新增彩虹猫子弹和武器贴图资源
- 实现彩虹猫子弹和武器逻辑脚本
- 添加武器预制体和相关动画效果
- 在公鸡角色中默认装备该武器
- 修改子弹基类添加AI调用逻辑

components/Bullets/Meowmere.tscn

@@ -0,0 +1,71 @@
+[gd_scene load_steps=9 format=3 uid="uid://dseriubgri7j5"]
+
+[ext_resource type="PackedScene" uid="uid://crtdkysmnkith" path="res://components/Abstracts/BulletBase.tscn" id="1_newpt"]
+[ext_resource type="Texture2D" uid="uid://cwr2pud7h8o3e" path="res://resources/bullets/meowmere/Meowmere.webp" id="2_ahi5w"]
+[ext_resource type="Script" path="res://scripts/Contents/Bullets/Meowmere.gd" id="2_eoimw"]
+
+[sub_resource type="SpriteFrames" id="SpriteFrames_432r6"]
+
+[sub_resource type="Animation" id="Animation_jdotg"]
+resource_name = "spwan"
+length = 0.2
+tracks/0/type = "value"
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/path = NodePath("sword:rotation")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/keys = {
+"times": PackedFloat32Array(0, 0.2),
+"transitions": PackedFloat32Array(1, 1),
+"update": 0,
+"values": [-0.436332, 2.00713]
+}
+
+[sub_resource type="Animation" id="Animation_q4hki"]
+length = 0.001
+tracks/0/type = "value"
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/path = NodePath("sword:rotation")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/keys = {
+"times": PackedFloat32Array(0),
+"transitions": PackedFloat32Array(1),
+"update": 0,
+"values": [-0.436332]
+}
+
+[sub_resource type="AnimationLibrary" id="AnimationLibrary_47iyl"]
+_data = {
+"RESET": SubResource("Animation_q4hki"),
+"spawn": SubResource("Animation_jdotg")
+}
+
+[sub_resource type="RectangleShape2D" id="RectangleShape2D_ja03c"]
+size = Vector2(56, 107)
+
+[node name="Meowmere" instance=ExtResource("1_newpt")]
+script = ExtResource("2_eoimw")
+autoSpawnAnimation = true
+freeAfterSpawn = true
+
+[node name="texture" parent="." index="0"]
+sprite_frames = SubResource("SpriteFrames_432r6")
+
+[node name="animator" parent="texture" index="0"]
+libraries = {
+"": SubResource("AnimationLibrary_47iyl")
+}
+
+[node name="sword" type="Node2D" parent="texture" index="1"]
+rotation = -0.436332
+
+[node name="texture" type="Sprite2D" parent="texture/sword" index="0"]
+position = Vector2(25, -29)
+texture = ExtResource("2_ahi5w")
+
+[node name="hitbox" parent="." index="1"]
+position = Vector2(30, -4.5)
+shape = SubResource("RectangleShape2D_ja03c")