Inject FeatureMetadata into RAIInsights

[gaugup]

Description

This change adds passing of FeatureMetadata into RAIInsights class. The FeatureMetadata is also saved on the disk via the save() and loaded back into the memory via RAIInsights.load(). The FeatureMetadata is also added to the Datasets interface in _interfaces.py so that the UI can make use of this data structure.

Checklist

• I have added screenshots above for all UI changes.
• I have added e2e tests for all UI changes.
• Documentation was updated if it was needed.

[codecov-commenter]

Codecov Report

Merging #1616 (47b13d4) into main (46e04a0) will decrease coverage by 0.07%.
The diff coverage is 66.66%.

@@            Coverage Diff             @@
##             main    #1616      +/-   ##
==========================================
- Coverage   88.97%   88.90%   -0.08%     
==========================================
  Files         111      111              
  Lines        5453     5470      +17     
==========================================
+ Hits         4852     4863      +11     
- Misses        601      607       +6     

Flag	Coverage Δ
unittests	88.90% <66.66%> (-0.08%)	⬇️

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Impacted Files	Coverage Δ
...sibleai/responsibleai/rai_insights/rai_insights.py	76.06% <62.50%> (-0.76%)	⬇️
responsibleai/responsibleai/_interfaces.py	100.00% <100.00%> (ø)

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[github-actions]

https://responsibleai.blob.core.windows.net/pullrequest/microsoft/responsible-ai-toolbox/gaugup/InjectFeatureMetadataIntoRAIInsights/dashboard/index.html

[github-actions]

https://responsibleai.blob.core.windows.net/pullrequest/microsoft/responsible-ai-toolbox/gaugup/InjectFeatureMetadataIntoRAIInsights/dashboard/index.html

[github-actions]

https://responsibleai.blob.core.windows.net/pullrequest/microsoft/responsible-ai-toolbox/gaugup/InjectFeatureMetadataIntoRAIInsights/dashboard/index.html