Feature/issue 82 expand compatibility to general hdf files

[danielfromearth]

GitHub Issue: #82

Description

This change enables comparisons of HDF5 files. It has been tested across a variety of NASA Earthdata datasets.

Local test steps

Added new unit tests, and all pass.

PR Acceptance Checklist

• Unit tests added/updated and passing.
• Integration testing
• CHANGELOG.md updated
• Documentation updated (if needed).

[codecov]

Codecov Report

Attention: Patch coverage is 97.68977% with 7 lines in your changes missing coverage. Please review.

Project coverage is 94.53%. Comparing base (048f2f8) to head (3233262).
Report is 23 commits behind head on develop.

Files with missing lines	Patch %	Lines
ncompare/getters.py	92.53%	5 Missing ⚠️
ncompare/Comparison.py	98.90%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #281      +/-   ##
===========================================
+ Coverage    92.01%   94.53%   +2.51%     
===========================================
  Files            6        9       +3     
  Lines          426      531     +105     
===========================================
+ Hits           392      502     +110     
+ Misses          34       29       -5     

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