Add evil-quick-diff

This introduces the `g o d` text object for comparing regions. It works
like evil-exchange. Select two regions in sequence with `g o d` and an
ediff buffer of the selections will pop up.

Signed-off-by: Rudi Grinberg <me@rgrinberg.com>

modules/editor/evil/packages.el

@@ -16,6 +16,7 @@
 (package! evil-traces)
 (package! evil-visualstar)
 (package! exato)
+(package! evil-quick-diff :recipe (:host github :repo "rgrinberg/evil-quick-diff"))
 
 ;;
 (when (featurep! +everywhere)