Add some new utility and info functions to Tower SDK

[bradhe]

Title says it all. We need some new utility functions in the Tower SDK that make it easier to get diagnostic info (see the info module) as well as get getting parameters and secrets. This just makes things a little easier for users.

[Copilot]

Pull request overview

This PR adds new utility and diagnostic functions to the Tower SDK, making it easier for users to access runtime information, retrieve parameters and secrets, and check execution context.

Changes:

• Added a new info module with functions to retrieve runtime environment details (schedule info, run metadata, runner details, execution context)
• Added utility functions in _utils.py for accessing parameters and secrets from environment variables
• Exposed the new info module and utility functions through the main SDK package

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
src/tower/info/init.py	Implements diagnostic functions to retrieve runtime environment information such as schedule details, run metadata, hostname/port, runner info, and execution context
src/tower/_utils.py	Adds utility functions for retrieving parameters and secrets from environment variables
src/tower/init.py	Exports the new utility functions and info module to make them accessible to SDK users

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[konstantinoscs]

LGTM

[konstantinoscs]

why?

[bradhe]

Just for convenience.

[konstantinoscs]

Then why not just get rid of the param method altogether? feels weird