feat: More completion things

- Further configure Orderless
  - Configure Orderless dispatch stuff
- Further configure Vertico
- Add & configure Embark
  - Integrate w/ which-key
- Move General into its own feature (syd-general), for easy import by other
  modules.

users/crumb/programs/emacs/modules/syd-general.el

@@ -0,0 +1,8 @@
+;;; syd-general.el -*- lexical-binding: t; -*-
+
+(use-package general
+  :custom (general-use-package-emit-autoloads t))
+
+(require 'general)
+
+(provide 'syd-general)