Add lovable.dev docs to the frameworks section

[preis-lab]

Description of changes

Adds a Markdown doc of how to utilize the Lovable tool for creating code with Chroma Node SDK

Test plan

Run it locally, navigate to integrations, in the frameworks section you should see Lovable.dev, when pressing it opens the full doc.

• [x] Tests pass locally with pytest for python, yarn test for js, cargo test for rust