Add token refresh functionality and improve token extraction

- Introduced a new `get_user_token.py` file to handle token refresh logic using the Chinese server API.
- Updated `config.py` to include new token settings for refresh server URL and enable refresh option.
- Refactored `oauth_auth.py` to utilize the new token extraction method, enhancing error handling and user feedback.
- Added localization strings for token refresh messages in both English and Chinese to improve user experience.

config.py

@@ -102,6 +102,10 @@ def setup_config(translator=None):
                 'show_selection_alert': False,  # 默认不显示选择提示弹窗
                 'timeout': 120,
                 'max_attempts': 3
+            },
+            'Token': {
+                'refresh_server': 'https://token.cursorpro.com.cn',
+                'enable_refresh': True
             }
         }