New API: delete_all_test_points()

[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 63.63636% with 8 lines in your changes missing coverage. Please review.

Project coverage is 57.39%. Comparing base (a190885) to head (53ddda6).

Files	Patch %	Lines
src/ansys/sherlock/core/layer.py	52.94%	8 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #314      +/-   ##
==========================================
+ Coverage   57.36%   57.39%   +0.03%     
==========================================
  Files          21       21              
  Lines        3994     4016      +22     
==========================================
+ Hits         2291     2305      +14     
- Misses       1703     1711       +8     

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