feat: Session management

[ajaynayak]

Adding session management to the GalileoLogger

logger.start_session(name="test-session", previous_session_id="6c4e3f7e-4a9a-4e7e-8c1f-3a9a3a9a3a9e", external_id="myAppId123")

...

logger.clear_session()

https://app.shortcut.com/galileo/story/29394/sdk-add-session-compatibility-to-the-galileologger-python

[codecov]

Codecov Report

Attention: Patch coverage is 72.34043% with 13 lines in your changes missing coverage. Please review.

Project coverage is 78.57%. Comparing base (4f7d8e0) to head (efa405e).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/galileo/utils/core_api_client.py	18.75%	13 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #120      +/-   ##
==========================================
- Coverage   78.71%   78.57%   -0.15%     
==========================================
  Files          36       36              
  Lines        2589     2632      +43     
==========================================
+ Hits         2038     2068      +30     
- Misses        551      564      +13     

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