Create README.Guidelines.md

[tcppb]

Decom https://github.com/surface-security/guidelines

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 0.00%. Comparing base (8e4f55f) to head (d6dcc4c).
Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##             main   #213       +/-   ##
=========================================
- Coverage   77.25%      0   -77.26%     
=========================================
  Files          84      0       -84     
  Lines        4022      0     -4022     
=========================================
- Hits         3107      0     -3107     
+ Misses        915      0      -915     

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