[groovyscripting] Add Groovy scripting support (#8772)

* Add Groovy scripting support

This makes it really easy to start using Groovy 3.x scripts with openHAB!

Signed-off-by: Wouter Born <github@maindrain.net>

bundles/org.openhab.automation.groovyscripting/pom.xml

@@ -0,0 +1,43 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  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.automation.groovyscripting</artifactId>
+
+  <name>openHAB Add-ons :: Automation :: Groovy Scripting</name>
+
+  <properties>
+    <bnd.importpackage>
+      com.ibm.icu.*;resolution:=optional,
+      groovy.runtime.metaclass;resolution:=optional,
+      groovyjarjarantlr4.stringtemplate;resolution:=optional,
+      org.abego.treelayout.*;resolution:=optional,
+      org.apache.ivy.*;resolution:=optional,
+      org.stringtemplate.v4.*;resolution:=optional</bnd.importpackage>
+    <groovy.version>3.0.6</groovy.version>
+  </properties>
+
+  <dependencies>
+    <dependency>
+      <groupId>org.codehaus.groovy</groupId>
+      <artifactId>groovy</artifactId>
+      <version>${groovy.version}</version>
+      <scope>compile</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.codehaus.groovy</groupId>
+      <artifactId>groovy-jsr223</artifactId>
+      <version>${groovy.version}</version>
+      <scope>compile</scope>
+    </dependency>
+  </dependencies>
+
+</project>