check if logger is instantiated by the user and tests

[sahiljhawar]

Closes #24

This pull request introduces a mechanism to warn users if a logger has not been instantiated when importing the swvo package, and adds tests to verify this behavior.

Logger initialization warning:

• Added code in swvo/__init__.py to check for logger handlers and print a colored warning if none are present, along with instructions for basic logger instantiation.

Testing logger warning behavior:

• Added tests/io/test_logger.py to test that the logger warning is printed when no handlers are present, and not printed when handlers exist, for both swvo and swvo.io modules.

[Copilot]

Pull Request Overview

This PR introduces a warning mechanism to alert users when the swvo package is imported without a logger being configured, improving user experience by providing clear guidance on logger setup.

• Added logger initialization check with colored warning messages in swvo/__init__.py
• Created comprehensive tests to verify warning behavior for both presence and absence of logger handlers
• Tests cover both swvo and swvo.io module imports to ensure consistent behavior

Reviewed Changes

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

File	Description
swvo/__init__.py	Added logger handler check with colored warning output and setup instructions
tests/io/test_logger.py	Added parameterized tests to verify warning behavior across different modules

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