Migrate other protocols to corresponding repositories

[SergeyKanzhelev]

Transition other protocols in separate repositories:

• @plehegar Merge Mark other protocols section point to the registry #249 and close Mark "Other Protocols" section non-formative and simply point to the registry #247
• @plehegar Create 3 repositories:

  https://github.com/w3c/trace-context-amqp
  https://github.com/w3c/trace-context-binary
  https://github.com/w3c/trace-context-mqtt
  

• @plehegar Transfer issue Additional Protocol Support https://github.com/w3c/trace-context/issues/35 to https://github.com/w3c/trace-context-protocols-registry/
• @plehegar Transfer issue https://github.com/w3c/trace-context/issues/198 to https://github.com/w3c/trace-context-protocols-registry/
• @plehegar Transfer issue Discuss Binary Format https://github.com/w3c/trace-context/issues/5 to https://github.com/w3c/trace-context-binary
• @SergeyKanzhelev Move PR Draft of binary format: moved to other repository #215 to https://github.com/w3c/trace-context-binary
• @SergeyKanzhelev Move PR AMQP draft: PR was moved to different repository #217 to https://github.com/w3c/trace-context-amqp
• @SergeyKanzhelev Move PR [WIP] MQTT format specification #245 to https://github.com/w3c/trace-context-mqtt

[plehegar]

https://w3c.github.io/trace-context-protocols-registry/ was updated for AMQP and binary. MQTT will have to be added when ready.

[SergeyKanzhelev]

Binary PR moved: w3c/trace-context-binary#2

[SergeyKanzhelev]

AMQP: w3c/trace-context-amqp#1

[SergeyKanzhelev]

MQTT: w3c/trace-context-mqtt#1

[SergeyKanzhelev]

Transition is completed. Closing the issue