These optional dotfiles indicate the root of a module or module
group (:lang), and will later contain module metadata. They will also
serve as an alternative to packages.el and doctor.el, and will aide the
parts of the v3.0 module API concerned with resolving the current module
from a path (`doom-module-from-path`), which currently rely too heavily
on parsing path strings.
For now, however, they're simply placeholders.
I intend to phase out the internal usage of use-package in Doom's core
and modules. The macro is too complex and magical for our needs.
That said, until we've fully removed it, this :config use-package is
hardcoded to be enabled-by-default, until use-package has been
refactored out of core and modules. It'd be wise not to add it to your
doom! blocks yet.