Add mechanism for regex filtering

[pvandyken]

Filters can now take a subkey: match or search, which will change the matching method from the default direct match to a python regex method.

[kaitj]

Largely looks good to me, some comments on some of the code comments and docstring.

[codecov-commenter]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (e4586e1) 90.63% compared to head (76b33db) 91.24%.
Report is 27 commits behind head on main.

❗ Current head 76b33db differs from pull request most recent head 8a8e06f. Consider uploading reports for the commit 8a8e06f to get more accurate results

Files	Patch %	Lines
snakebids/core/input_generation.py	95.74%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #365      +/-   ##
==========================================
+ Coverage   90.63%   91.24%   +0.60%     
==========================================
  Files          32       33       +1     
  Lines        1495     1564      +69     
==========================================
+ Hits         1355     1427      +72     
+ Misses        140      137       -3     

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