chain simulator create block time and bypass flags

[axenteoctavian]

Reasoning behind the pull request

• Need a create block duration argument to test mempool selection

Proposed changes

• CreateBlockMaxTimePercent percent of the total round duration, default 25%
• BypassCreateBlockTimeCheck bypass this check, default true

Testing procedure

- -

Pre-requisites

Based on the Contributing Guidelines the PR author and the reviewers must check the following requirements are met:

• was the PR targeted to the correct branch?
• if this is a larger feature that probably needs more than one PR, is there a feat branch created?
• if this is a feat branch merging, do all satellite projects have a proper tag inside go.mod?

[codecov]

Codecov Report

❌ Patch coverage is 61.11111% with 7 lines in your changes missing coverage. Please review.
✅ Project coverage is 77.62%. Comparing base (b092494) to head (a0b9ce3).
⚠️ Report is 37 commits behind head on feat/supernova-async-exec.

Files with missing lines	Patch %	Lines
node/chainSimulator/process/processor.go	58.82%	7 Missing ⚠️

Additional details and impacted files

@@                      Coverage Diff                      @@
##           feat/supernova-async-exec    #7650      +/-   ##
=============================================================
- Coverage                      77.64%   77.62%   -0.03%     
=============================================================
  Files                            877      877              
  Lines                         121667   121763      +96     
=============================================================
+ Hits                           94469    94516      +47     
- Misses                         20939    20986      +47     
- Partials                        6259     6261       +2     

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