config/default: bind SPC c {F,i,r} to LSP commands

These are experimental keybinds. I'm looking for a way to integrate
LSP's formatter commands (and lsp-organize-imports) into the :editor
format module. And a way to unify refactoring commands (perhaps with emr
or erefactor), including lsp-rename.

- 'SPC c F' -> format region or buffer
- 'SPC c i' -> organize imports
- 'SPC c r' -> rename symbol at point

Addresses #1417

modules/config/default/autoload/default.el

@@ -315,3 +315,12 @@ ARG is set, prompt for a known project to search from."
   (interactive)
   (doom-completing-read-org-headings
    "Jump to org headline: " org-agenda-files 3 t))
+
+;;;###autoload
+(defun +default/lsp-format-region-or-buffer ()
+  "Format the buffer (or selection) with LSP."
+  (interactive)
+  (call-interactively
+   (if (use-region-p)
+       #'lsp-format-region
+     #'lsp-format-buffer)))