Add functionality to save training patches

[sarthakpati]

Fixes #262

Proposed Changes

• training patches can now be saved by added save_training: True in config
• includes Updates to integrate new OPM APIs #261

Checklist

• I have read the CONTRIBUTING guide
• My PR is based from the current GaNDLF master
• Non-breaking change (would not break existing functionality): please provide as many details as possible for any breaking change
• Function/class source code documentation added/updated
• Code has been blacked for style consistency
• If applicable, version information has been updated in GANDLF/version.py
• If adding a submodule, add to list of exceptions for black styling in pyproject.toml file
• Usage documentation has been updated, if appropriate
• History has been updated, if appropriate
• Tests added or modified to cover the changes; if coverage is reduced, please give explanation

[codecov]

Codecov Report

Merging #263 (5def3ee) into master (5a949da) will increase coverage by 0.09%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #263      +/-   ##
==========================================
+ Coverage   87.23%   87.33%   +0.09%     
==========================================
  Files          80       80              
  Lines        4169     4194      +25     
==========================================
+ Hits         3637     3663      +26     
+ Misses        532      531       -1     

Flag	Coverage Δ
unittests	87.33% <100.00%> (+0.09%)	⬆️

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

Impacted Files	Coverage Δ
GANDLF/parseConfig.py	74.72% <ø> (ø)
GANDLF/utils/__init__.py	100.00% <ø> (ø)
setup.py	0.00% <ø> (ø)
GANDLF/compute/training_loop.py	80.97% <100.00%> (+0.28%)	⬆️
GANDLF/utils/imaging.py	83.33% <100.00%> (+4.76%)	⬆️
GANDLF/utils/parameter_processing.py	100.00% <100.00%> (ø)
testing/test_full.py	99.00% <100.00%> (+<0.01%)	⬆️
GANDLF/utils/generic.py	82.50% <0.00%> (+2.50%)	⬆️

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[Geeks-Sid]

Looks good to me.