Feature: Support distributed tracing

[vwxyzh]

Support distributed tracing

• Server SDK
  • server -> client. (Paused)
  • client -> server.
• Management SDK (server -> client). (Paused)
  • Persistent Mode.
  • Transient Mode.
• Serverless upstream (client -> server).
• Service REST API (server -> client). (Rollbacked, due to SignalR Java client failing on 'Headers not implemented yet.' dotnet/aspnetcore#62713)
• Function extension.

[vwxyzh]

Pause all items for server -> client, due to issue: dotnet/aspnetcore#62713