Add TblStats in Configurable Validator

[sooahleex]

Summary

• This PR should be merged after Add TabularValidator #1498
• Add TblStats to support task type of tabular

How to test

• Add unit tests for configurable validator

Checklist

• I have added unit tests to cover my changes.​
• I have added integration tests to cover my changes.​
• I have added the description of my changes into CHANGELOG.​
• I have updated the documentation accordingly

License

• I submit my code changes under the same MIT 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) 2024 Intel Corporation
#
# SPDX-License-Identifier: MIT

[codecov]

Codecov Report

Attention: Patch coverage is 92.22798% with 15 lines in your changes are missing coverage. Please review.

Project coverage is 80.88%. Comparing base (44cc56a) to head (cc7d530).
Report is 60 commits behind head on develop.

Files	Patch %	Lines
src/datumaro/plugins/configurable_validator.py	92.22%	4 Missing and 11 partials ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1504      +/-   ##
===========================================
+ Coverage    80.85%   80.88%   +0.02%     
===========================================
  Files          271      276       +5     
  Lines        30689    31862    +1173     
  Branches      6197     6442     +245     
===========================================
+ Hits         24815    25770     +955     
- Misses        4489     4664     +175     
- Partials      1385     1428      +43     

Flag	Coverage Δ
ubuntu-20.04_Python-3.10	80.87% <92.22%> (+0.02%)	⬆️
windows-2022_Python-3.10	80.85% <92.22%> (+0.02%)	⬆️

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