DM-46503: Implement Mermaid for pipeline and quantum graph visualization

[enourbakhsh]

Checklist

• ran Jenkins
• added a release note for user-visible changes to doc/changes

[codecov]

Codecov Report

Attention: Patch coverage is 40.00000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 89.96%. Comparing base (1832a0e) to head (2fc55a9).
Report is 2 commits behind head on main.

✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
python/lsst/ctrl/mpexec/cli/script/build.py	0.00%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #317      +/-   ##
==========================================
- Coverage   90.03%   89.96%   -0.08%     
==========================================
  Files          50       50              
  Lines        4567     4572       +5     
  Branches      420      421       +1     
==========================================
+ Hits         4112     4113       +1     
- Misses        328      330       +2     
- Partials      127      129       +2     

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[leeskelvin]

LGTM! Looking forward to seeing this on main!