Add a verification to check scopes satisfaction in decision tasks

[ahal]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 17.24138% with 24 lines in your changes missing coverage. Please review.
✅ Project coverage is 58.26%. Comparing base (d530da6) to head (3aaf509).
⚠️ Report is 725 commits behind head on main.

Files with missing lines	Patch %	Lines
src/taskgraph/util/verify.py	11.53%	23 Missing ⚠️
src/taskgraph/decision.py	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #103      +/-   ##
==========================================
- Coverage   58.52%   58.26%   -0.26%     
==========================================
  Files          62       62              
  Lines        4894     4922      +28     
==========================================
+ Hits         2864     2868       +4     
- Misses       2030     2054      +24     

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[ahal]

This is on hold until we figure out how to proceed regarding #10 (comment)