Update localization and versioning for Vietnamese support

- Increment version to 1.7.07 in .env file.
- Add Vietnamese language support in main.py and localization files (vi.json, zh_cn.json, zh_tw.json).
- Translate Chinese language options to English in localization files.

locales/zh_tw.json

@@ -17,7 +17,8 @@
     "languages": {
         "en": "English",
         "zh_cn": "简体中文",
-        "zh_tw": "繁體中文"
+        "zh_tw": "繁體中文",
+        "vi": "Vietnamese"
     },
     "quit_cursor": {
         "start": "開始退出 Cursor",