Improvements for Web Service

Following the work of #21, we need to:

1. Improvements for better life and support:
- [x] Print server address on the terminal
- [ ] Versionise all API
- [x] Add address configuration via CLI argument
- [x] Add a trace layer to the router and log each request and response via tracing
- [ ] Add a trace layer to keep track of request/response metrics
- [ ] Add swagger/openAPI
- [ ] Add custom internal error definitions
- [x] Move out from ctlr_c

2. Improvements in robustness/performance:
- [ ] Add a rate limit for requests
- [ ] Add cache for endpoints
- [x] Add CORS support
- [ ] (maybe) Add HTTPS support
- [ ] Add support for compression when the client supports it
- [ ] Add a mechanism to restart the web server in case of unresponsiveness or bad metrics, or via user request