fix(tools): Ensure helm-make package keybinding works

This is a temporary fix for now, as I prefer lazy-loading packages
whenever possible. However when lazy-loading helm, and then using
use-package to set a keybinding in the helm-command-map before it's
loaded, causes the "m" keybinding to be overridden by the default one
from helm, once helm loads.

modules/navigation/siren-helm.el

@@ -15,6 +15,7 @@
   (set-default 'imenu-max-items 400))
 
 (use-package helm
+  :demand t
   :hook
   (helm-minibuffer-set-up . siren-helm--hide-minibuffer-maybe)
   (helm-after-initialize . siren-helm--toggle-source-header-line)