Native config.d (#5165)

* Add support for loading yaml from a config directory

* Add waveshare hats to the new config.d approach

* Move to available.d for module inactive module configs

bin/config-dist.yaml

@@ -1,15 +1,11 @@
+### Many device configs have been moved to /etc/meshtasticd/available.d
+### To activate, simply copy or link the appropriate file into /etc/meshtasticd/config.d
+
 ### Define your devices here using Broadcom pin numbering
 ### Uncomment the block that corresponds to your hardware
 ### Including the "Module:" line!
 ---
 Lora:
-#  Module: sx1262  # Waveshare SX126X XXXM
-#  DIO2_AS_RF_SWITCH: true
-#  CS: 21
-#  IRQ: 16
-#  Busy: 20
-#  Reset: 18
-#  SX126X_ANT_SW: 6
 
 #  Module: sx1262  # Waveshare SX1302 LISTEN ONLY AT THIS TIME!
 #  CS: 7
@@ -179,3 +175,4 @@ Webserver:
 General:
   MaxNodes: 200
   MaxMessageQueue: 100
+  ConfigDirectory: /etc/meshtasticd/config.d/