feat: 1. 添加武器基础脚本

2. 添加武器基本resources
3. 武器碰撞 RangeArea 进入和退出检测
4. 添加 Hitbox 进行武器碰撞敌人区域（只是添加了，功能还没实现）
5. 武器冷却时间 weapon_base / CooldownTimer

scenes/weapons/melee/weapon_punch.tscn

@@ -0,0 +1,20 @@
+[gd_scene format=3 uid="uid://d1igydtpm3sq8"]
+
+[ext_resource type="PackedScene" uid="uid://dcc7rsdy4j8v6" path="res://scenes/weapons/weapon_base.tscn" id="1_soyvn"]
+[ext_resource type="PackedScene" uid="uid://c0fyx8gj5uexl" path="res://scenes/components/hitbox_component.tscn" id="2_gq287"]
+
+[sub_resource type="RectangleShape2D" id="RectangleShape2D_gq287"]
+size = Vector2(52, 42)
+
+[node name="WeaponPunch" unique_id=63743776 instance=ExtResource("1_soyvn")]
+
+[node name="Sprite2D" parent="." index="0" unique_id=1011668514]
+position = Vector2(21, 1)
+
+[node name="HitboxComponent" parent="Sprite2D" index="0" unique_id=151235566 instance=ExtResource("2_gq287")]
+scale = Vector2(2, 2)
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="Sprite2D/HitboxComponent" index="0" unique_id=1064980236]
+z_index = 1
+shape = SubResource("RectangleShape2D_gq287")
+debug_color = Color(0.9556908, 0.042769283, 0.5218647, 0.41960785)