refactor!(default): drag-stuff: make non-evil only

BREAKING CHANGE: This makes the drag-stuff package and its keybinds only
available to non-evil users. This was done because the package doesn't
bring much value for evil users, where text-objects are more powerful.
Plus, drag-stuff doesn't interact well with visual block or line modes
in evil, rendering drag-stuff-{left,right} not useful enough to warrant
keeping.

modules/config/default/config.el

@@ -584,6 +584,14 @@ Continues comments if executed from a commented line."
   (add-hook 'doom-first-buffer-hook #'delete-selection-mode)
   (setq shift-select-mode t)
 
+  (use-package! drag-stuff
+    :defer t
+    :init
+    (map! "<M-up>"    #'drag-stuff-up
+          "<M-down>"  #'drag-stuff-down
+          "<M-left>"  #'drag-stuff-left
+          "<M-right>" #'drag-stuff-right))
+
   (use-package! expand-region
     :commands (er/contract-region er/mark-symbol er/mark-word)
     :config