feat(logging): add sample to list available logs

[l-krrish]

Adds Python sample demonstrating how to list all available logs in a Google Cloud project, similar to the existing Node.js implementation.

• Includes list_logs.py sample with region tag logging_list_logs
• Includes list_logs_test.py with test coverage
• Follows existing sample patterns in the repository

Fixes #15427

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Fixes #<issue_number_goes_here> 🦕

[snippet-bot]

Here is the summary of changes.

You are about to add 1 region tag.

• samples/list_logs.py:28, tag logging_list_logs

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[gemini-code-assist]

Summary of Changes

Hello @l-krrish, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request introduces a new Python sample that provides a programmatic way to retrieve and display a list of all logs associated with a specified Google Cloud project. This addition enhances the existing set of examples by offering a Python-specific implementation for log listing, aligning with patterns found in other language samples within the repository.

Highlights

• New Python Sample: Adds a new Python sample, list_logs.py, demonstrating how to list all available logs within a Google Cloud project.
• Region Tagging: The new sample includes the region tag logging_list_logs for documentation and discoverability.
• Test Coverage: A corresponding test file, list_logs_test.py, has been added to ensure the functionality of the new sample.
• Issue Resolution: This pull request addresses and fixes issue #15427.

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[gemini-code-assist]

Code Review

This pull request introduces a new Python sample for listing logs in a Google Cloud project, along with a corresponding test. The implementation is clear and follows the existing patterns in the repository. My review includes a few suggestions to improve code style and conciseness, such as simplifying an API call and addressing minor formatting issues.