### What problem does this PR solve?
1. Fix go server date precision
2. Use API_SCHEME_PROXY to control the web API route
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
---------
Signed-off-by: Jin Hai <haijin.chn@gmail.com>
### What problem does this PR solve?
Feature (System Settings): Implemented system settings management
functionality
- Added a new SystemSettings model, including creation and update time
fields.
- Implemented SystemSettingsDAO, providing CRUD operations and
transaction support.
- Implemented management interfaces for variables, configurations, and
environment variables in the admin service.
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
Co-authored-by: Yingfeng <yingfeng.zhang@gmail.com>
