[relay] Feature/relay integration

[pappz]

Describe your changes

• Add Relay server implementation
• Integrate the Relay server
• Refactor the conn worker logic
• Refactor the offer/answer sending logic
• Add fallback logic to Relay connection in case failed to use ICE p2p connection

Relay package

• Authentication (client/server)
• Helathcheck and reconnection (guard.go). The health check is in a separated package but the usage of it is also relevant.
• Protocol life circle betwen the Relay server - Relay client. Review to process the message types (messages package).
  • Hello (auth msg),
  • package transfer logic and internal store of the peers
  • close procedure
• Roaming between the server instances in case if the peers are connected on different servers. client/manager.go
• Review the command line (cmd) package what boot TLS, listeners, metrics components
• TLS managment code review. It is relevant for the signal and managmenet code also because I reuse these function in all server services.
• Metrics

Issue ticket number and link

Checklist

• [ ] Is it a bug fix
• [ ] Is a typo/documentation fix
• [x] Is a feature enhancement
• [x] It is a refactor
• [ ] Created tests that fail without the change (if possible)
• [ ] Extended the README / documentation, if necessary

[sonarqubecloud[bot]]

Quality Gate passed

Issues
0 New issues
7 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud