bug#43153: Add new command project-find-dir (and move binding of project-dired)

[Stefan Kangas]

Juri Linkov <juri@linkov.net> writes:

>> Could we move `project-dired' to `C-x p D' in Emacs 28.1, while awaiting
>> this new keybinding `C-x p d'?  Moving it later will be much harder.
>
> If current `project-dired' actually means "project-root-dired",
> then it makes sense to bind it to `C-x p D' like `C-x v D' (vc-root-diff).

Does it makes sense to rename it, as well?

For the sake of completion I mention that the same command is named
`projectile-dired' in projectile, where it is bound here to `C-c p D'.
I believe you can use whatever prefix you want, though.