Pulse pars minor modification

[tdixon97]

This makes it a little easier to use the code outside the simflow by making the metadata and the l200data the arguments to the functions to get pulse pars.

[codecov]

Codecov Report

❌ Patch coverage is 11.47541% with 54 lines in your changes missing coverage. Please review.
✅ Project coverage is 59.17%. Comparing base (026f4b3) to head (9e7f068).

Files with missing lines	Patch %	Lines
workflow/src/legendsimflow/utils.py	16.12%	26 Missing ⚠️
...imflow/scripts/extract_hpge_current_pulse_model.py	0.00%	15 Missing ⚠️
workflow/src/legendsimflow/hpge_pars.py	13.33%	13 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #42      +/-   ##
==========================================
- Coverage   60.60%   59.17%   -1.44%     
==========================================
  Files          18       18              
  Lines        1051     1085      +34     
==========================================
+ Hits          637      642       +5     
- Misses        414      443      +29     

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