fix: .gitignore + add 44 language JSON files

languages/zh.json

@@ -0,0 +1,25 @@
+{
+  "app_title": "Lity3D 编辑器",
+  "file": "文件",
+  "build": "构建",
+  "scene": "场景",
+  "help": "帮助",
+  "lang": "语言",
+  "new": "新建",
+  "open": "打开",
+  "save": "保存",
+  "exit": "退出",
+  "run": "运行游戏",
+  "compile": "编译引擎",
+  "package": "打包 EXE",
+  "explorer": "资源管理器",
+  "output": "输出",
+  "ready": "就绪",
+  "running": "运行中...",
+  "saved": "已保存",
+  "opened": "已打开",
+  "build_first": "请先编译引擎",
+  "kill": "进程已终止",
+  "packaged": "已打包",
+  "about": "关于 Lity3D"
+}