Requirements for contrib instrumentations

[mateuszrzeszutek]

This issue tracks all requirements/dependencies that we have to implement to be able to extract instrumentation to the contrib repo.

• Extract and publish the muzzle codegen plugin Extract the muzzle codegen gradle plugin #2778
• Extract and publish the muzzle check plugin Build and publish muzzle check plugin separately #1225
• Release stable instrumentation-api Release stable version of opentelemetry-instrumentation-api #2892
• Release stable javaagent-instrumentation-api (still called javaagent-api for now)
• Release stable javaagent-extension-api

It might be a good idea to stabilize at least a part of testing-common too, those instrumentations have to have tests after all.

[iNikem]

What about instrumentation-api-annotation-support and instrumentation-api-caching? Is making them stable required for proper contrib experience?

[mateuszrzeszutek]

instrumentation-api-caching is a part of instrumentation-api (it shouldn't be released at all, it's baked into the instrumentation-api lib) so it's required.
We probably don't have to make instrumentation-api-annotation-support stable yet, it's only used in those instrumentations that do something with annotations (e.g. @WithSpan)