Make setting timezone an explicit act

Since we can't always rely on geo guessing everywhere and it is slow

bin/omarchy-tz-select

@@ -0,0 +1,6 @@
+#!/bin/bash
+
+timezone=$(timedatectl list-timezones | gum filter --height 20 --header "Set timezone") || exit 1
+sudo timedatectl set-timezone "$timezone"
+echo "Timezone is now set to $timezone"
+omarchy-restart-waybar