add artifact description to distribution module

[skip ci]

(cherry picked from commit b3c7d6b)

Author: mtf90

distribution/pom.xml

@@ -29,6 +29,13 @@ limitations under the License.
     <packaging>pom</packaging>
     <name>LearnLib :: Distribution</name>
 
+    <description>
+        An afrtifact that aggregates all other artifacts of LearnLib to produce an Uber-JAR that can be used in
+        non-maven environments. Likewise, this single artifact may be used in maven-aware environments to declare a
+        dependency on all LearnLib artifacts.
+    </description>
+
+
     <!--
     All packaged AutomataLib dependencies.