Add DuckDB Connection

[caleb-mabry]

Purpose

This PR is meant to add support for the DuckDB connection.
https://duckdb.org/docs/api/nodejs/overview.html

Using Just a Query

    const connection = new DuckDBConnection('md:my_shared_db', {
        'motherduck_token': 'YOUR_TOKEN_HERE'
    })
    const response = await connection.query({query: 'select * from movies limit 5'})
    console.log('The data:', response.data)
    console.log('The error:', response.error.message)

Using Parameters

    const connection = new DuckDBConnection('md:my_shared_db', {
        'motherduck_token': 'YOUR_TOKEN_HERE'
    })
    const response = await connection.query({query: 'SELECT ?::INTEGER AS fortytwo', parameters: [52]})
    console.log('The data:', response.data)
    console.log('The error:', response.error.message)

Tasks

• [ ]

Verify

Before

After

[Brayden]

Couple of comments, overall this is looking great! Excited to have DuckDB support 🫡

[Brayden]

Currently in other connections we have the constructor just take an object instead of multiple parameters. This allows any connection to have a predictable pattern. I'd say we should probably lean in that direction here as well unless we have a good reason not to and then I'd remain open-minded.

[Brayden]

This response is intended to be the absolute raw query so users can debug what was executed against their database, so change to:

const rawSQL = constructRawQuery(query)
// ...

return {
    data: result,
    error: null,
    query: rawSQL
}

[Brayden]

Same as above