feat: 集成海龟就地筑巢功能（移植自 turtle-reproduce）

- 新增规则 turtleLocalNesting（默认 false）控制开关，关闭时走原版逻辑 & - 搬入 NestingSiteFinder（高性能就近沙滩搜索） & - 搬入 TurtleGoHomeGoalMixin / TurtleLayEggGoalMixin / TurtleAccessor / PathNavigationAccessor & - 原独立 mod turtle-reproduce 的功能并入本 Carpet 扩展 & - 补中英语言描述

src/main/resources/slsaddition.mixins.json

@@ -32,7 +32,11 @@
     "shulker.MixinServerPlayNetworkHandler",
     "shulker.MixinSlot",
     "world.MixinSleepManager",
-    "world.MixinSpawnHelper"
+    "world.MixinSpawnHelper",
+    "turtle.PathNavigationAccessor",
+    "turtle.TurtleAccessor",
+    "turtle.TurtleGoHomeGoalMixin",
+    "turtle.TurtleLayEggGoalMixin"
   ],
   "injectors": {
     "defaultRequire": 1