Fix LSTBIN for redundantly-averaged inpainted data

[steven-murray]

Makes the following fixes:

• Use the unique identifier baseline for a group when processing redundantly-averaged data, in the .where_inpainted. file.
• trim the where-inpainted files in the same way as the calfiles and datafiles (removing empty nights)
• 🤦🏻 write out the MAD data to the MAD file instead of the STD file...

[codecov]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (98efdac) 97.18% compared to head (99803bb) 97.18%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #912   +/-   ##
=======================================
  Coverage   97.18%   97.18%           
=======================================
  Files          23       23           
  Lines       10433    10444   +11     
=======================================
+ Hits        10139    10150   +11     
  Misses        294      294           

Flag	Coverage Δ
unittests	97.18% <100.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
hera_cal/lstbin_simple.py	97.62% <100.00%> (+0.03%)	⬆️

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[jsdillon]

Looks alright to me, assuming tests pass!