[mqtt] Support Ruuvitags via Ruuvi Gateway (#13315)

Signed-off-by: Sami Salonen <ssalonen@gmail.com>

bundles/org.openhab.binding.mqtt.ruuvigateway/NOTICE

@@ -0,0 +1,21 @@
+This content is produced and maintained by the openHAB project.
+
+* Project home: https://www.openhab.org
+
+== Declared Project Licenses
+
+This program and the accompanying materials are made available under the terms
+of the Eclipse Public License 2.0 which is available at
+https://www.eclipse.org/legal/epl-2.0/.
+
+== Source Code
+
+https://github.com/openhab/openhab-addons
+
+== Third-party Content
+
+[ruuvitag-common-java]
+* License: MIT License
+* Project: https://github.com/Scrin/ruuvitag-common-java
+* Source:  https://github.com/Scrin/ruuvitag-common-java
+