Modify runopt alias api to be less verbose

[AbishekS]

Summary:
The changes in previous diffs make the API usages too verbose

1. So in this we revert cfg_key back to a string type and
2. add aliases as list and
3. deprecated_aliases as list.
4. Auto aliasing has been modified as well of type bool, default to be true and only applied to the cfg_key.

opts.add(
  name="rmAttribution",
  aliases=["tenant"],
  deprecated_aliases = ["RmAttr"],
  auto_aliases=True,
)

5. Also modify all the changes made in D85248506

Differential Revision: D85591292

[meta-codesync]

@AbishekS has exported this pull request. If you are a Meta employee, you can view the originating Diff in D85591292.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.61%. Comparing base (7f68b89) to head (c382d3c).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1155      +/-   ##
==========================================
- Coverage   91.61%   91.61%   -0.01%     
==========================================
  Files          84       84              
  Lines        6644     6583      -61     
==========================================
- Hits         6087     6031      -56     
+ Misses        557      552       -5     

Flag	Coverage Δ
unittests	91.61% <100.00%> (-0.01%)	⬇️

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