add stability level to components

[codeboten]

This updates all the receiver/processors/exporters to report their stability status, which is then logged when the collector service starts.

I didn't know if I should add a line to the changelog for every component, or just a single one for all components.

[jpkrohling]

I reviewed the components that concern me, and they look alright. The only one that left me scratching my head was the group by trace processor, which is in development, while all others are in beta. I'll change it to beta afterward, but if anyone knows the history behind this, do let me know. For now, I'll assume it was an oversight.

[djaglowski]

One note. Otherwise, the components that I am familiar with look good.

[tigrannajaryan]

Can we go with open-telemetry/opentelemetry-collector#5635 to avoid blocking the release for now?

[codeboten]

Can we go with open-telemetry/opentelemetry-collector#5635 to avoid blocking the release for now?

@tigrannajaryan i think that's the right thing to do, otherwise it will be too rushed and doesn't give time to anyone with components outside of this repo to implement the same change

[TylerHelmuth]

I reviewed my components and did a quick scan of other components and everything looked good. I'd say go with 1 changelog entry.