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>

src/configuration.h

@@ -57,8 +57,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define REQUIRE_RADIO true // If true, we will fail to start if the radio is not found
 
 /// Convert a preprocessor name into a quoted string
-#define xstr(s) str(s)
-#define str(s) #s
+#define xstr(s) ystr(s)
+#define ystr(s) #s
 
 /// Convert a preprocessor name into a quoted string and if that string is empty use "unset"
 #define optstr(s) (xstr(s)[0] ? xstr(s) : "unset")
@@ -209,4 +209,4 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #ifndef HW_VENDOR
 #error HW_VENDOR must be defined
-#endif
+#endif