warrenbhw duckdb_notion .cursorrules file for C++

I'm building a DuckDB extension for Notion.

Here are some examples of DuckDB Extensions:
- Google Sheets: https://github.com/evidence-dev/duckdb_gsheets
- Azure: https://github.com/duckdb/duckdb_azure
- HTTP(S): https://github.com/duckdb/duckdb/tree/main/extension/httpfs
- Iceberg: https://github.com/duckdb/duckdb_iceberg

In particular, the Google Sheets extension is the most similar to what we're trying to build, so it may be a good reference.
Much of the starter code in this repo is based on the Google Sheets extension.

In addition, for reference, here is the Notion API reference: https://developers.notion.com/reference/intro

For the extension, we may want to use some of the following Notion API endpoints:
- Authenticate: https://developers.notion.com/reference/authentication
- List databases: https://developers.notion.com/reference/post-search
- Get the schema of a database: https://developers.notion.com/reference/retrieve-a-database
- Get the contents of a database: https://developers.notion.com/reference/post-database-query
- Add a page (row) to a Notion database: https://developers.notion.com/reference/post-page
- Get a specific page: https://developers.notion.com/reference/retrieve-a-page
- Update page properties: https://developers.notion.com/reference/patch-page
- Trash a page: https://developers.notion.com/reference/archive-a-page