Add hlabel parent resolver and integrate HLabelData + HLabelInfo --> HLabelInfo

[sungmanc]

Summary

This PR introduces,

• Integrate the classes: HLabelData + HLabelInfo --> HLabelInfo : previously, it's hierarchy useless. So, integrated.
• Add _add_ancestor function to the HLabelDataset, so OTXv2 could get the ancestor annotation when it's not included.
• Change the tests/assets data to check the case that miss the parent information.
• Change the fixture to explain the HLabel case more easily

How to test

Checklist

• I have added unit tests to cover my changes.​
• I have added integration tests to cover my changes.​
• I have added e2e tests for validation.
• I have added the description of my changes into CHANGELOG in my target branch (e.g., CHANGELOG in develop).​
• I have updated the documentation in my target branch accordingly (e.g., documentation in develop).
• I have linked related issues.

License

• I submit my code changes under the same Apache License that covers the project.
  Feel free to contact the maintainers if that's a concern.
• I have updated the license header for each file (see an example below).

# Copyright (C) 2023 Intel Corporation
# SPDX-License-Identifier: Apache-2.0

[codecov]

Codecov Report

Attention: Patch coverage is 84.74576% with 18 lines in your changes are missing coverage. Please review.

Project coverage is 59.34%. Comparing base (506a22f) to head (471b7a9).

Files	Patch %	Lines
src/otx/core/model/module/classification.py	0.00%	10 Missing ⚠️
src/otx/core/data/dataset/classification.py	92.77%	6 Missing ⚠️
src/otx/core/model/entity/classification.py	50.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##               v2    #3046      +/-   ##
==========================================
+ Coverage   59.04%   59.34%   +0.30%     
==========================================
  Files         253      253              
  Lines       14952    14984      +32     
==========================================
+ Hits         8829     8893      +64     
+ Misses       6123     6091      -32     

Flag	Coverage Δ
py310	59.34% <84.74%> (+0.30%)	⬆️
py311	59.34% <84.74%> (+0.30%)	⬆️

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