Cache fom literal string extraction

[linsword13]

No description provided.

[gemini-code-assist]

Code Review

This pull request optimizes performance in lib/ramble/ramble/util/foms.py by refactoring FomType methods to use static lookup dictionaries and introducing an LRU cache for regex literal extraction. A review comment suggests returning a copy of the dictionary in to_dict to prevent callers from accidentally modifying the global cache.

[ramble-pr-bot]

Ramble Performance Test Metrics

Results produced with commit: 2f597ec

Test Name	Outcome	Duration (s)	Most Recent Run (s)	Last 5 Avg (s)
test_analyze_large_file	passed	2.0787	2.0792 (68681d4)	2.0969
test_large_template_expansion	passed	1.2024	1.1981 (68681d4)	1.5081
test_many_experiments	passed	25.3015	24.4462 (68681d4)	25.0302
test_many_objects_defaults	passed	12.7982	13.1446 (68681d4)	13.9296
test_matrix_filter_perf	passed	1.1453	1.0867 (68681d4)	1.1523

[codecov]

Codecov Report

❌ Patch coverage is 90.90909% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 94.01%. Comparing base (68681d4) to head (2f597ec).
⚠️ Report is 3 commits behind head on develop.

Files with missing lines	Patch %	Lines
lib/ramble/ramble/util/foms.py	90.90%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1730      +/-   ##
===========================================
- Coverage    94.01%   94.01%   -0.01%     
===========================================
  Files          367      367              
  Lines        36886    36893       +7     
===========================================
+ Hits         34679    34684       +5     
- Misses        2207     2209       +2     

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