Axum with SeaORM example app

1. Modify the DATABASE_URL var in .env to point to your chosen database

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

3. Execute cargo run to start the server

4. Visit localhost:8000 in browser

Run mock test on the service logic crate:

cd service
cargo test --features mock

Run migration:

cargo run -p migration -- up

Run seeder:

cargo run -p seeder -- up