feat(storage): add IpFilter support to bucket metadata

[thiyaguk09]

Thank you for opening a Pull Request! Before submitting your PR, there are a few things you can do to make sure it goes smoothly:

• Make sure to open an issue as a bug/issue before writing your code! That way we can discuss the change, evaluate designs, and agree on the general idea
• Ensure the tests and linter pass
• Code coverage does not decrease (if any source code was changed)
• Appropriate docs were updated (if necessary)

Fixes #<issue_number_goes_here> 🦕

[gemini-code-assist]

Code Review

This pull request introduces support for configuring a bucket's IP Filter by adding the IpFilter interface and updating BucketMetadata in bucket.ts. It also includes corresponding unit and system tests to verify enabling, updating, getting, and clearing the IP Filter configuration. The review feedback highlights a couple of inconsistencies in the system tests: first, a test named 'should enable and set ipFilter' actually sets the mode to 'Disabled', so it should be renamed; second, the test 'should clear ipFilter' only clears the allowed IP ranges rather than the entire configuration, so it should be renamed and a new test should be added to verify clearing the configuration completely by setting it to null.