Unify `DerivedRowMapper` and `RowMapper.renamed`

[nMoncho]

In order to create a RowMapper for case class Foo we can do RowMapper[Foo], and if we want to rename fields we do RowMapper.renamed[Foo](...).
This works in contrast with Mapping with only offers one method for both.

With this issue we want to unify both methods. This will require deprecating renamed, offering the same features to apply, and remove renamed for v2.