Intro SubsetRelationshipInspector

[Wh1isper]

Description

Motivation and Context

• Move RelationshipInspector as base class
• Intro SubsetRelationshipInspector as default RelationshipInspector
• Some bug fix and improvment

How has this been tested?

Types of changes

• Maintenance (no change in code, maintain the project's CI, docs, etc.)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.

[sweep-ai]

Apply Sweep Rules to your PR?

• Apply: All new business logic should have corresponding unit tests.
• Apply: Refactor large functions to be more modular.
• Apply: Add docstrings to all functions and file headers.

[codecov-commenter]

Codecov Report

Attention: 3 lines in your changes are missing coverage. Please review.

Comparison is base (9bf075a) 78.68% compared to head (dd399cd) 79.32%.

Files	Patch %	Lines
sdgx/data_models/inspectors/base.py	81.81%	2 Missing ⚠️
sdgx/data_models/inspectors/subset_relationship.py	97.43%	1 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##             main      #99      +/-   ##
==========================================
+ Coverage   78.68%   79.32%   +0.64%     
==========================================
  Files          59       59              
  Lines        2463     2496      +33     
==========================================
+ Hits         1938     1980      +42     
+ Misses        525      516       -9     

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