dialects: Refresh Affine, add interoperability test.

[PapyChacal]

Refresh affine:

• affine.for:
  • Rename (lower|upper)_bound -> (lower|upper)BoundMap
  • Split variadics arguments in 3 variadic arguments 🎉
• affine.if:
  For some reason affine.if's condition is not a property.

Add interoperability test.

[codecov]

Codecov Report

Attention: 3 lines in your changes are missing coverage. Please review.

Comparison is base (3d1c19f) 89.84% compared to head (4cdd547) 89.83%.

Files	Patch %	Lines
xdsl/dialects/affine.py	76.92%	1 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1981      +/-   ##
==========================================
- Coverage   89.84%   89.83%   -0.01%     
==========================================
  Files         284      284              
  Lines       35473    35478       +5     
  Branches     5227     5228       +1     
==========================================
+ Hits        31869    31872       +3     
- Misses       2836     2837       +1     
- Partials      768      769       +1     

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[superlopuh]

Thank you!