[guntamatic] Initial contribution: Binding for Guntamatic Heating Systems (#12011)

Signed-off-by: Michael Weger <weger.michael@gmx.net>

bundles/pom.xml

@@ -142,6 +142,7 @@
     <module>org.openhab.binding.gpstracker</module>
     <module>org.openhab.binding.gree</module>
     <module>org.openhab.binding.groheondus</module>
+    <module>org.openhab.binding.guntamatic</module>
     <module>org.openhab.binding.haassohnpelletstove</module>
     <module>org.openhab.binding.harmonyhub</module>
     <module>org.openhab.binding.haywardomnilogic</module>