Filter stack and radial covar optimizations

[garrettwrong]

Converts code towards filter stacks while maintaining ability to use legacy single filters (for now).

Provides a to_radial method for Filters.

Provides means to mix most singleton and stack filters. Vectorizes bulk evaluations.

Tries to vectorize (and sometimes use GPU when things fit) for filter_statck_to_basis_mats.

Add code paths to run radially optimized filter_stack_to_basis_mat.

Adds a smoke/timing test for covar2d using 10028 (ribsome) and 11618 (ctf per image) experimental sized cases.

Still a WIP, need self review.

[codecov]

Codecov Report

❌ Patch coverage is 97.03504% with 11 lines in your changes missing coverage. Please review.
✅ Project coverage is 90.65%. Comparing base (20a8ac2) to head (39bcdb4).

Files with missing lines	Patch %	Lines
src/aspire/operators/filters.py	96.02%	6 Missing ⚠️
src/aspire/basis/fle_2d.py	93.02%	3 Missing ⚠️
src/aspire/basis/ffb_2d.py	95.65%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1388      +/-   ##
===========================================
+ Coverage    90.56%   90.65%   +0.08%     
===========================================
  Files          135      135              
  Lines        14691    14926     +235     
===========================================
+ Hits         13305    13531     +226     
- Misses        1386     1395       +9     

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[garrettwrong]

Going to kick off the full CI suite.

[janden]

Nice work! A few questions here and there, but nothing major.

[garrettwrong]

@janden for the _ctf_params and atleast_1d, just let me know what you'd prefer to see in the code and I'll change it if need be. Then I can have this back to you while I re-run all the tests. (That will take a while unfortunately).

[garrettwrong]

I was just informed our dev machines need to go down for maintenance. I'm going to merge this now in case there are issues with the updates. Can followup any outstanding concerns with small patches.

[janden]

Looked through everything and didn't see any problems.