Introduced MQTT detectors to autodetect MQTT devices

hal-core/build.gradle

@@ -7,3 +7,20 @@ dependencies {
     implementation 'org.shredzone.acme4j:acme4j-client:2.12'
     implementation 'org.shredzone.acme4j:acme4j-utils:2.12'
 }
+
+// Make test classes available to other projects
+
+configurations {
+    testClasses {
+        extendsFrom(testImplementation)
+    }
+}
+
+task testJar(type: Jar) {
+    archiveClassifier.set('test')
+    from sourceSets.test.output
+}
+
+artifacts {
+    testClasses testJar // add the jar generated by the testJar task to the testClasses dependency
+}