add distro zip creation

distro-zip.xml

@@ -0,0 +1,30 @@
+<assembly xmlns="http://maven.apache.org/ASSEMBLY/2.1.0"
+  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/ASSEMBLY/2.1.0 http://maven.apache.org/xsd/assembly-2.1.0.xsd">
+  <id>distro zip</id>
+  <formats>
+    <format>zip</format>
+  </formats>
+  <includeBaseDirectory>false</includeBaseDirectory>
+  <dependencySets>
+    <dependencySet>
+      <!-- place extension jar in folder root to be parsed by OJ -->
+      <outputDirectory>/</outputDirectory>
+      <useTransitiveFiltering>false</useTransitiveFiltering>
+      <includes>
+        <include>${artifact}</include>
+      </includes>
+    </dependencySet>
+    <dependencySet>
+      <!-- place deps in a extension specific subfolder -->
+      <outputDirectory>/${project.build.finalName}</outputDirectory>
+      <unpack>false</unpack>
+      <scope>runtime</scope>
+      <useTransitiveFiltering>true</useTransitiveFiltering>
+      <useProjectArtifact>false</useProjectArtifact>
+      <excludes>
+        <exclude>org.openjump:OpenJUMP</exclude>
+      </excludes>
+    </dependencySet>
+  </dependencySets>
+</assembly>

pom.xml

@@ -30,4 +30,53 @@
         </dependency>
     </dependencies>
 
+    <build>
+      <plugins>
+        <plugin>
+          <artifactId>maven-assembly-plugin</artifactId>
+          <version>3.3.0</version>
+          <configuration>
+            <appendAssemblyId>false</appendAssemblyId>
+          </configuration>
+          <executions>
+            <execution>
+              <id>distro zip</id>
+              <phase>package</phase>
+              <configuration>
+                <descriptors>
+                  <descriptor>distro-zip.xml</descriptor>
+                </descriptors>
+                <attach>false</attach>
+              </configuration>
+              <goals>
+                <goal>single</goal>
+              </goals>
+            </execution>
+          </executions>
+        </plugin>
+        <plugin>
+          <groupId>net.nicoulaj.maven.plugins</groupId>
+          <artifactId>checksum-maven-plugin</artifactId>
+          <version>1.10</version>
+          <executions>
+            <execution>
+              <goals>
+                <goal>files</goal>
+              </goals>
+              <phase>package</phase>
+              <configuration>
+                <fileSets>
+                  <fileSet>
+                    <directory>${project.build.directory}</directory>
+                    <includes>
+                      <include>${project.build.finalName}.zip</include>
+                    </includes>
+                  </fileSet>
+                </fileSets>
+              </configuration>
+            </execution>
+          </executions>
+        </plugin>
+      </plugins>
+    </build>
 </project>