Working drizzle integration

[Hajbo]

A quick PoC for the drizzle ORM. Unfortunately drizzle-kit doesn't support bun:sqlite so for the migration generation we need to use better-sqlite for now.

To create a migration:

1. Make sure you are in the root of the project
2. Run bun drizzle-kit generate:sqlite

To run the example and auto-apply the migration:

cd src/db
bun index.ts

It'll create the users table (if needed), insert a new user and select all existing users.

[yamcodes]

This was internally scrapped in favor of #35, due to Drizzle's poor support of file/in-memory databases in Bun. (At least Sqlite based ones.)

We should create a minimal reproducible example bug report for the Drizzle team.