chore(concurrency): add log messages to the concurrency module

[avi-starkware]

This change is 

[avi-starkware]

Example log messages:

[ThreadId(10684)] Finished executing transaction index 1.
[ThreadId(10684)] Validating transaction index 1.
[ThreadId(10684)] Finished validating transaction index 1 with no abort.
[ThreadId(10684)] Executing transaction index 11.
[ThreadId(10684)] Finished executing transaction index 11.
[ThreadId(10684)] Executing transaction index 12.
[ThreadId(10684)] Finished executing transaction index 12.
[ThreadId(10684)] Validating transaction index 4.
[ThreadId(10684)] Aborted transaction index 4.
[ThreadId(10684)] Executing transaction index 4.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.61%. Comparing base (d924c79) to head (03bc0b9).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1990   +/-   ##
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  Coverage   78.61%   78.61%           
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  Files          62       62           
  Lines        8895     8895           
  Branches     8895     8895           
=======================================
  Hits         6993     6993           
  Misses       1455     1455           
  Partials      447      447           

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[Yoni-Starkware]

I don't think this should be merged into the main; it's too many prints.
You can use it until the version is stable

Reviewable status: 0 of 2 files reviewed, all discussions resolved (waiting on @barak-b-starkware, @meship-starkware, @noaov1, and @OriStarkware)

[avi-starkware]

It might make better sense to add metrics for the batcher operations and individual threads. This way we will be able to monitor and debug performance without cluttering the logs.