This commit was created by a combination of scripts and tools:
- an ast-grep script to prefix things in meta with `lib.`,
- a modified nixf-diagnose / nixf combination to remove unused `with
lib;`, and
- regular nixfmt.
Co-authored-by: Wolfgang Walther <walther@technowledgy.de>
We dont want to keep polluting the plugins folder. Moving to a folder
for non-generated plugins that only exist in overrides to be part of the
package set.
