feat: Add log record processors

[kaylareopelle]

This PR adds a Simple Log Record Processor and a Batching Log Record Processor.

Closes #1485
Closes #1486

(Failure is for an unrelated suite)

[mwear]

LGTM. It would be nice if we can extract the batching logic to be signal agnostic and make it shareable between spans and logs. At a glance, it looks like this should be possible, but something we can do as a future refactor, possibly after logs are stabilized and integrated into the main SDK.

[kaylareopelle]

LGTM. It would be nice if we can extract the batching logic to be signal agnostic and make it shareable between spans and logs. At a glance, it looks like this should be possible, but something we can do as a future refactor, possibly after logs are stabilized and integrated into the main SDK.

@mwear, I agree! I created #1528 to track this a while back. Once we get logs to stability, I think there's a lot that could be shared between logs and traces.