ADD: config for building jar

.idea/artifacts/mh_tree_jar.xml

+<component name="ArtifactManager">
+  <artifact type="jar" name="mh-tree:jar">
+    <output-path>$PROJECT_DIR$/out/artifacts/mh_tree_jar</output-path>
+    <root id="archive" name="mh-tree.jar">
+      <element id="module-output" name="mh-tree" />
+      <element id="extracted-dir" path="$PROJECT_DIR$/jars/messif.jar" path-in-jar="/" />
+      <element id="extracted-dir" path="$PROJECT_DIR$/jars/similarityoperators.jar" path-in-jar="/" />
+    </root>
+  </artifact>
+</component>
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