tailsampling processor: Add support for logs

[BinaryHexer]

Is your feature request related to a problem? Please describe.
Allow logs to be sampled based on the same logic as traces (grouping by traceID) to enable tail sampling for distributed logs for requests spanning multiple services.

Describe the solution you'd like
Add implementation for the component.LogsProcessor interface to the existing tailsamplingprocessor.

Describe alternatives you've considered
N/A

Additional context
N/A

[BinaryHexer]

@jpkrohling
Sorry for mentioning you here, but I just saw #1797.
Considering the context of the above issue, what would be best strategy to proceed if support for sampling for logs is to be considered?

[jpkrohling]

It's still not clear to me what's the future of the current tail-sampling. I have it in my queue to run some performance tests and assess whether we should deprecate it in favor of a more granular set of processors. Until a decision is made, I would not invest much time in a prototype for tail-based sampling for logs.

[github-actions]

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[sinkingpoint]

@jpkrohling @crobert-1 was there ever any progress on this? It seems like the tailsamplingprocessor is still around and not deprecated. I've run into a need for this myself, and have (mostly?) implemented it internally at Cloudflare so happy to cut a PR. Something to discuss at the next SIG meeting?

[jpkrohling]

@sinkingpoint, absolutely, we can certainly discuss this. If you are on the CNCF Slack, you might want to join #otel-sampling as well.