Config: extract keybinding functions and clean up key configs

- Add init-kbd-func.el for keybinding helper functions
- Move global-display-line-numbers-mode from early-init.el to init.el
- Slim down init-kbd.el: remove hydra-multiple-cursors, migrate defs
- Reorganize dirvish config
- Remove scattered global-set-key bindings from init-org, init-ui, etc.
- Guard server-start with server-running-p check
- Set ibuffer-default-sorting-mode to filename
- Tweak gptel config

lisp/init-org-refile.el

@@ -135,9 +135,6 @@
     (find-file-other-window filepath)
     (message "Successfully refiled to %s" filepath)))
 
-(with-eval-after-load 'org
-  (define-key org-mode-map (kbd "C-c o w") #'my-org-refile-to-new-file))
-
 (provide 'init-org-refile)
 
 ;;; init-org-refile.el ends here