feat: Added import thermal signal API

[ansys-pwalters]

Description

Added import thermal signal API

Issue linked

606

Checklist:

• [y] Run unit tests and make sure they all pass
  - Run tests without Sherlock running
  - Run tests with Sherlock GRPC connection
• [y] Check and fix style errors
  - pre-commit command line check
  - Problems tab in PyCharm
• [y] 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
• [y] Generate documentation
• [y] 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
• [y] Make sure that the title of the pull request follows Commit naming conventions (e.g. feat: adding new PySherlock command)

[codecov]

Codecov Report

❌ Patch coverage is 90.41096% with 7 lines in your changes missing coverage. Please review.
✅ Project coverage is 61.36%. Comparing base (22c7680) to head (740f461).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/ansys/sherlock/core/lifecycle.py	55.55%	4 Missing ⚠️
src/ansys/sherlock/core/types/lifecycle_types.py	95.31%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #612      +/-   ##
==========================================
+ Coverage   61.00%   61.36%   +0.35%     
==========================================
  Files          21       22       +1     
  Lines        5627     5700      +73     
==========================================
+ Hits         3433     3498      +65     
- Misses       2194     2202       +8     

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