New API: update_modeling_region()

[ansnfernand]

Checklist:

• Run unit tests and make sure they all pass
• Check and fix style errors
  - pre-commit command line check
  - Problems tab in PyCharm
• Bench test new/modified APIs by using and modifying the code in the example for the API method
• [] Add new classes to rst files, located at: \doc\source\api
• Generate documentation
• Verify the HTML. It gets generated at: \doc\build\html.
  - Open index.html
  - Click on "API Reference" at the top.
  - Verify HTML for API changes.
• Check that test code coverage is at least 80% when Sherlock is running and can be connected to using gRPC

[codecov]

Codecov Report

Attention: Patch coverage is 34.45378% with 78 lines in your changes missing coverage. Please review.

Project coverage is 56.77%. Comparing base (74587d9) to head (2066117).
Report is 1 commits behind head on main.

Files	Patch %	Lines
src/ansys/sherlock/core/layer.py	30.00%	77 Missing ⚠️
src/ansys/sherlock/core/errors.py	88.88%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #363      +/-   ##
==========================================
- Coverage   57.21%   56.77%   -0.45%     
==========================================
  Files          21       21              
  Lines        4434     4541     +107     
==========================================
+ Hits         2537     2578      +41     
- Misses       1897     1963      +66     

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