Bug Fix read_ldata

[theHenks]

Included ignore_missing kwarg in read_ldata to be able to ignore missing channels. In particular useful for Water Cherenkov PMT analysis.

raw = read_ldata(l200, DataTier(:raw), :phy, :p03, :r000, ch; ignore_missing=true)

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 10 lines in your changes missing coverage. Please review.

Project coverage is 42.00%. Comparing base (a660e56) to head (485fa64).
Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
ext/LegendDataManagementLegendHDF5IOExt.jl	0.00%	10 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #89      +/-   ##
==========================================
- Coverage   42.08%   42.00%   -0.09%     
==========================================
  Files          26       26              
  Lines        1972     1976       +4     
==========================================
  Hits          830      830              
- Misses       1142     1146       +4     

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