[ecovacs] Initial contribution (#12231)

* [ecovacs] Initial contribution

Add initial version of a binding for vacuum cleaners made by Ecovacs.

Signed-off-by: Danny Baumann <dannybaumann@web.de>

bundles/pom.xml

@@ -116,6 +116,7 @@
     <module>org.openhab.binding.echonetlite</module>
     <module>org.openhab.binding.ecobee</module>
     <module>org.openhab.binding.ecotouch</module>
+    <module>org.openhab.binding.ecovacs</module>
     <module>org.openhab.binding.ecowatt</module>
     <module>org.openhab.binding.ekey</module>
     <module>org.openhab.binding.electroluxair</module>