Rename mutation_support into twoarg_support

[gdalle]

Core

• Rename mutation_support into twoarg_support
• Rename Mutation(Not)Supported into TwoArg(Not)Supported

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 92.85714% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 96.13%. Comparing base (cc73842) to head (f651ae2).

Files	Patch %	Lines
DifferentiationInterface/src/utils/check.jl	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #230   +/-   ##
=======================================
  Coverage   96.13%   96.13%           
=======================================
  Files          74       74           
  Lines        3911     3911           
=======================================
  Hits         3760     3760           
  Misses        151      151           

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