YAML based config for PI / Portduino (#2943)

* Add configuration via /etc/meshtastic/config.yaml

* Move example config, support more locations

* Fix config check

* Use access() to check for config file presence

* Throw an error and exit on radio init fail

* Adds error check for reading Bluetooth MAC

* Settle on meshtasticd, add install script

* Shell fixes

* Fine. I'll put it back and then disable you

* Get wrekt, shellchekt

* Firat attempt at adding raspbian CI build

* Tickle the workflow

* Beatings will continue til morale improves

* Permissions are overrated

---------

Co-authored-by: Jonathan Bennett <jbennett@incomsystems.biz>

bin/meshtasticd.service

@@ -0,0 +1,9 @@
+[unit]
+description=Meshtastic Native Daemon
+
+[Service]
+Type=simple
+ExecStart=/usr/sbin/meshtasticd
+
+[Install]
+WantedBy=multi-user.target