Standardize REPL commands & improve SPC o r

- SPC o r now prompts for a REPL to open when none was found for the
  current buffer.
- REPL handlers must now follow the naming convention "*/open*-repl".
  e.g. +python/open-ipython-repl, +emacs-lisp/open-repl, etc.
- +eval/open-repl has been split in two:
  - +eval/open-repl-other-window
  - +eval/open-repl-same-window

modules/lang/javascript/README.org

@@ -34,5 +34,5 @@ sudo pacman --needed --noconfirm -S nodejs npm
 ** Commands
 | command                          | key / ex command | description                                                |
 |----------------------------------+------------------+------------------------------------------------------------|
-| ~+javascript/repl~               | =:repl=          | Open the NodeJS REPL (or send the current selection to it) |
+| ~+javascript/open-repl~          | =:repl=          | Open the NodeJS REPL (or send the current selection to it) |
 | ~+javascript/skewer-this-buffer~ | =SPC m S=        | Attaches a browser to the current buffer                   |

modules/lang/javascript/autoload.el

@@ -36,7 +36,7 @@ ignore the cache."
 ;; Commands
 
 ;;;###autoload
-(defun +javascript/repl ()
+(defun +javascript/open-repl ()
   "Open a Javascript REPL. Meaning either `skewer-repl', if any of the
 skewer-*-mode's are enabled, or `nodejs-repl' otherwise."
   (interactive)

modules/lang/javascript/config.el

@@ -52,7 +52,7 @@
     mode-name "JS2")
 
   (set-electric! 'js2-mode :chars '(?\} ?\) ?. ?:))
-  (set-repl-handler! 'js2-mode #'+javascript/repl)
+  (set-repl-handler! 'js2-mode #'+javascript/open-repl)
 
   (map! :map js2-mode-map
         :localleader