Add OpenHAB3 tutorial and BLE binary (#1254)

* Add OpenHAB3 tutorial and BLE binary

* Small text changes

Just a few small text changes, also writing out OMG as OpenMQTTGateway, probably clearer for new to OMG users.

Co-authored-by: DigiH <github@digih.net>

platformio.ini

@@ -41,6 +41,7 @@ extra_configs =
 ;default_envs = esp32dev-gf-sun-inverter
 ;default_envs = esp32dev-ir
 ;default_envs = esp32dev-ble
+;default_envs = esp32dev-ble-openhab
 ;default_envs = esp32dev-ble-aws
 ;default_envs = esp32dev-ble-cont
 ;default_envs = esp32feather-ble
@@ -407,6 +408,23 @@ build_flags =
   '-DLED_SEND_RECEIVE_ON=0'
   '-DGateway_Name="OpenMQTTGateway_ESP32_BLE"'
 
+[env:esp32dev-ble-openhab]
+platform = ${com.esp32_platform}
+board = esp32dev
+board_build.partitions = min_spiffs.csv
+lib_deps =
+  ${com-esp.lib_deps}
+  ${libraries.wifimanager32}
+  ${libraries.ble}
+  ${libraries.decoder}
+build_flags =
+  ${com-esp.build_flags}
+  '-DZgatewayBT="BT"'
+  '-DLED_SEND_RECEIVE=2'
+  '-DLED_SEND_RECEIVE_ON=0'
+  '-DOpenHABDiscovery=true'
+  '-DGateway_Name="OpenMQTTGateway_ESP32_BLE_OH"'
+
 [env:esp32dev-ble-mqtt-undecoded]
 platform = ${com.esp32_platform}
 board = esp32dev