Rocket with SeaORM example app

1. Modify the url var in api/Rocket.toml to point to your chosen database

2. Turn on the appropriate database feature for your chosen db in core/Cargo.toml (the "sqlx-postgres", line)

3. Execute cargo run to start the server

4. Visit localhost:8000 in browser after seeing the 🚀 Rocket has launched from http://localhost:8000 line

Run mock test on the core logic crate:

cd core
cargo test --features mock