[new] databases/p5-Mojo-SQLite, databases/p5-SQL-Abstract-Pg, devel/p5-URI-Nested and devel/p5-URI-db

Hi!

Here are some new ports that I used for making https://openbsd.app

They are basically `portgen`d with some "now you live in the tree"
tweaks.

Cluesticks? OKs?