Override default straight recipe for vertico to expose extensions as
packages.
Also create hacky vertico-directory-mode to easily toggle
vertico-directory features on and off.
vertico-directory-mode is then used by a projectile advice to
temporarily disable vertico-directory features while completing results
from projectile. This is required to avoid breaking the
projectile-switch-project and related commands, as the project list is
not a set of files, but vertico-directory-enter thinks it is.
Jim Myhrberg
309bc2a611
