feat(游戏平衡): 调整敌人生成和子弹行为

- 将敌人数量增长逻辑移至GameRule并调整计算公式
- 修改鸡的攻击行为，子弹现在会朝向玩家发射
- 调整子弹伤害值和旋转动画
- 减少玩家初始苹果数量并增加敌人掉落苹果数量
- 修改BOSS出现波数为第8波
- 移除无用属性和优化代码结构

components/Bullets/Star.tscn

@@ -15,8 +15,20 @@ animations = [{
 "speed": 5.0
 }]
 
-[sub_resource type="Animation" id="Animation_kmogx"]
-resource_name = "spawn"
+[sub_resource type="Animation" id="Animation_cig5u"]
+length = 0.001
+tracks/0/type = "value"
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/path = NodePath(".:rotation")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/keys = {
+"times": PackedFloat32Array(0),
+"transitions": PackedFloat32Array(1),
+"update": 0,
+"values": [4.38234]
+}
 
 [sub_resource type="Animation" id="Animation_ynxlt"]
 resource_name = "loop"
@@ -35,20 +47,8 @@ tracks/0/keys = {
 "values": [0.0, 6.28319]
 }
 
-[sub_resource type="Animation" id="Animation_cig5u"]
-length = 0.001
-tracks/0/type = "value"
-tracks/0/imported = false
-tracks/0/enabled = true
-tracks/0/path = NodePath(".:rotation")
-tracks/0/interp = 1
-tracks/0/loop_wrap = true
-tracks/0/keys = {
-"times": PackedFloat32Array(0),
-"transitions": PackedFloat32Array(1),
-"update": 0,
-"values": [4.38234]
-}
+[sub_resource type="Animation" id="Animation_kmogx"]
+resource_name = "spawn"
 
 [sub_resource type="AnimationLibrary" id="AnimationLibrary_ls1ie"]
 _data = {
@@ -64,7 +64,7 @@ radius = 19.2354
 script = ExtResource("2_y4b0l")
 fields = {
 0: 10,
-1: 5,
+1: 1,
 2: 0
 }
 lifeTime = 1000.0