feat: initial bluetooth support (#9)

* Enable Bluetooth LE radio support
* Build our own bccmd which we need to setup/enable this BT chipset sadly
* Use our own tool we build to interface with the ubnt eeprom, so we can not rely on their custom kernel module
* Also fix HDDs not spinning down on shutdown, doing something similar to how unifi does it but a tad more generic.

scripts/02_download_dependencies.sh

@@ -24,4 +24,10 @@ if [ ! -f ${root_path}/downloads/${kernel_filename} ]; then
     wget ${kernel_src} -O ${root_path}/downloads/${kernel_filename}
 fi
 
+# Bluez
+if [ ! -f ${root_path}/downloads/${bluez_filename} ]; then
+    debug_msg "Downloading Package Bluez..."
+    wget ${bluez_src} -O ${root_path}/downloads/${bluez_filename}
+fi
+
 debug_msg "Finished 02_download_dependencies.sh"