Add .matches(node: BaseNode) method to MetadataFilter, MetadataFilters

[ZmeiGorynych]

Description

The MetadataFilter and MetadataFilters classes don't appear to have functionality to be evaluated directly against BaseNode instances (eg when working with the nodes in-memory). This PR allows a natural syntax filter.matches(node), and recursively supports any nesting of MetadataFilters.

Fixes #17574

New Package?

Did I fill in the tool.llamahub section in the pyproject.toml and provide a detailed README.md for my new integration or package?

• Yes
• [x ] No

Version Bump?

Did I bump the version in the pyproject.toml file of the package I am updating? (Except for the llama-index-core package)

• Yes
• [x ] No

Type of Change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• [x ] New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Your pull-request will likely not be merged unless it is covered by some form of impactful unit testing.

• I added new unit tests to cover this change
• I believe this change is already covered by existing unit tests

Suggested Checklist:

• [ x] I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added Google Colab support for the newly added notebooks.
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• I ran make format; make lint to appease the lint gods

[logan-markewich]

Neat!

Can you run make lint and add any files that get changed?

I also so a lot of errors from mypy when type checking.

Lastly, would appreciate adding a test or two