Reduce inputs required by user

[jbusecke]

The template is still requiring a lot of knowledge particularly about names/paths. I would like to simplify this, at least for the simple 'single-recipe' case:

Collecting issues here:

• Finalize recipe (+ test new rclone copy stage) chirps_feedstock#1 (comment)
• Can we autogenerate the catalog yaml (and maybe a prefilled recipe)? #28