feat: build CouchOS Melee appliance

scripts/discover_controller.sh

@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+set -Eeuo pipefail
+
+ADDRESS="${1:-C8:3F:26:12:69:7B}"
+
+bluetoothctl info "${ADDRESS}" || true
+printf '\nKnown-safe template: templates/controllers/xbox-standard-controller.profile.ini\n'
+printf 'Do not fill in SDL GUIDs or Dolphin device IDs until you confirm them on this machine.\n'