Add session management during shutdown and improve session handling

[Dwij1704]

📥 Pull Request

📘 Description
Closes #914
Add session management during shutdown and improve session handling

• Introduced a global atexit handler to automatically end active sessions on shutdown.
• Updated the Client class to register the active session globally.
• Enhanced the end_session function to clear the client active session reference appropriately.
• Improved error handling during session ending to ensure robustness.
• Added context initialization in telemetry setup for better validation.

[codecov]

Codecov Report

Attention: Patch coverage is 52.94118% with 40 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
agentops/legacy/__init__.py	52.27%	21 Missing ⚠️
agentops/client/client.py	40.00%	12 Missing ⚠️
agentops/sdk/decorators/utility.py	68.42%	6 Missing ⚠️
agentops/sdk/core.py	50.00%	1 Missing ⚠️

📢 Thoughts on this report? Let us know!

[bboynton97]

1. two session urls printed
2. incorrect API key should not be an exception

[bboynton97]

double print is actually expected. one at kickoff and the other at the end of the run. API key was an issue with local environment.

nice job @Dwij1704 :)

[bboynton97]

this definitively limits us to one trace at a time. meaning we cannot track multiple agents running at once with the same agentops client.

this may need to be refactored for that in the future if/when that functionality is required

[bboynton97]

verified it works with manual testing connected to prod

[bboynton97]

Is this ready to merge @Dwij1704 ?

[Dwij1704]

Is this ready to merge @Dwij1704 ?

Yes!