feat(cli): add hidden CLI option to show nc-exec fail traces

[jansegre]

Motivation

I've been doing this manually for a while, it's really helpful for debugging. With an option to enable it from the CLI it will be useful for users of Docker images, so no code change is needed to show the stack traces.

Acceptance Criteria

• Add a hidden --nc-exec-fail-trace CLI option that translates to exc_info=True when logging a nano execution failure (the equivalent env var is HATHOR_NC_EXEC_FAIL_TRACE=true)

Checklist

• If you are requesting a merge into master, confirm this code is production-ready and can be included in future releases as soon as it gets merged

[github-actions]

Bencher Report

Branch	feat/cli/nc-exec-fail-trace
Testbed	ubuntu-22.04

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Benchmark	Latency	Benchmark Result minutes (m) (Result Δ%)	Lower Boundary minutes (m) (Limit %)	Upper Boundary minutes (m) (Limit %)
sync-v2 (up to 20000 blocks)	📈 view plot 🚷 view threshold	1.81 m (+5.47%) Baseline: 1.72 m	1.55 m (85.34%)	2.06 m (87.89%)

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[codecov]

Codecov Report

❌ Patch coverage is 60.00000% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 86.07%. Comparing base (a9cf795) to head (d2db923).
⚠️ Report is 4 commits behind head on master.

Files with missing lines	Patch %	Lines
hathor/consensus/block_consensus.py	60.00%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1444      +/-   ##
==========================================
+ Coverage   86.05%   86.07%   +0.02%     
==========================================
  Files         436      437       +1     
  Lines       34020    34037      +17     
  Branches     5319     5323       +4     
==========================================
+ Hits        29276    29298      +22     
+ Misses       3694     3689       -5     
  Partials     1050     1050              

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