[irobot] iRobot binding (#8723)

* [irobot] iRobot binding

Supports iRobot Roomba and probably some other iRobots (in parts where they
are compatible)

* [irobot] Drop custom hivemq wrapper

setUnsubscribeOnStop() has been introduced in
org.openhab.core.io.transport.mqtt.MqttBrokerConnection, so it can now handle
iRobot's quirks. The custom wrapper is no more needed, remove it

Signed-off-by: Pavel Fedin <pavel_fedin@mail.ru>
Co-authored-by: Fabian Wolter <github@fabian-wolter.de>

bundles/org.openhab.binding.irobot/pom.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+
+  <modelVersion>4.0.0</modelVersion>
+
+  <parent>
+    <groupId>org.openhab.addons.bundles</groupId>
+    <artifactId>org.openhab.addons.reactor.bundles</artifactId>
+    <version>3.0.0-SNAPSHOT</version>
+  </parent>
+
+  <artifactId>org.openhab.binding.irobot</artifactId>
+
+  <name>openHAB Add-ons :: Bundles :: iRobot Binding</name>
+</project>