Add support for LadybugDB

[adsharma]

Description

LadybugDB is a fork of an embedded graph database that was formerly known as kuzudb

Fixes #20066

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
• 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
• No

Type of Change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• 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:

• 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 uv run make format; uv run make lint to appease the lint gods

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[prrao87]

Looking forward to seeing this PR merged! cc @logan-markewich as I mentioned, @adsharma (Arun Sharma) has taken over Kuzu's fork (ladybugdb), and merging this PR would be useful to the ex-Kuzu community who would be happy to use ladybug. From my side, I'd be happy to point Kuzu users who ask to this extension instead. And Arun will be maintaining the fork in the open long term, and building more things around ladybug and its ecosystem going forward.

BTW @adsharma I think the checkbox formatting for the consent form is broken (there's an extraneous space after each 'x').

[adsharma]

Formatting fixed. Thanks @prrao87