[extension/opamp] Report AvailableComponents via the OpAMP extension

[mrsillydog]

Component(s)

extension/opamp

Is your feature request related to a problem? Please describe.

I would like to be able to access what components are accessible in the collector programmatically via the OpAMP extension. This would be especially useful for dynamically reacting to the available components depending on the build of the collector.

Describe the solution you'd like

I would like to use the module info which was made accessible to extensions in open-telemetry/opentelemetry-collector#10876 in tandem with the upcoming release of opamp-go, which should contain the open-telemetry/opamp-go#340, to support retrieval of the available collector components.

Describe alternatives you've considered

No response

Additional context

No response

[github-actions]

Pinging code owners:

• extension/opamp: @portertech @evan-bradley @tigrannajaryan

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