Tokio Postgres migration

Simple library to run postgres migrations

```rust use tokiopostgresmigration::Migration;

const SCRIPTSUP: [(&str, &str); 2] = [ ( "0001-create-table-users", includestr!("../assets/0001-create-table-users-up.sql"), ), ( "0002-create-table-pets", include_str!("../assets/0002-create-table-pets-up.sql"), ), ];

const SCRIPTSDOWN: [(&str, &str); 2] = [ ( "0002-create-table-pets", includestr!("../assets/0002-create-table-pets-down.sql"), ), ( "0001-create-table-users", include_str!("../assets/0001-create-table-users-down.sql"), ), ];

let mut client = buildpostgresclient().await?; let migration = Migration::new("tabletokeepmigrations".tostring()); // execute non existing migrations migration.up(&mut client, &SCRIPTSUP).await?; // execute existing migrations migration.down(&mut client, &SCRIPTSDOWN).await?; ```