[DISC] Add runtime configuration for OpenHAB (#1658)

* [DISC] Add runtime configuration for OpenHAB

Add an MQTT configurable system key "ohdiscovery" for OpenHAB auto discovery

* Docs and environments update

.github/workflows/build.yml

@@ -19,7 +19,6 @@ jobs:
           - "esp32dev-gf-sun-inverter"
           - "esp32dev-ir"
           - "esp32dev-ble"
-          - "esp32dev-ble-openhab"
           - "esp32dev-ble-mqtt-undecoded"
           - "esp32dev-ble-aws"
           - "esp32feather-ble"
@@ -60,7 +59,6 @@ jobs:
           - "nodemcuv2-rf-cc1101"
           - "nodemcuv2-somfy-cc1101"
           - "manual-wifi-test"
-          - "openhab-test"
           - "nodemcuv2-mqtt-fw-test"
           - "rf-wifi-gateway"
           - "nodemcuv2-rf2"