Surface max_lifetime connection option

[Sytten]

It is missing from the abstraction over sqlx, but is an important thing (specially for serverless)

[billy1624]

Hey @Sytten, thanks for pointing that out. We can add that, in the meantime you can use one of from_sqlx_* conversion method to setup the connection with max_lifetime config.

REF: https://docs.rs/sqlx/latest/sqlx/pool/struct.PoolOptions.html#method.max_lifetime