Add Java dependency for SSH module to Gradle

Build 208 of ganymed-ssh2 is closest available version (Aug 2005)

⚠️ Modules were not tested after upgrade

modules/helma/build.gradle

@@ -0,0 +1,8 @@
+dependencies {
+	runtime 'ch.ethz.ganymed:ganymed-ssh2:build208'
+}
+
+task deps(type: Copy) {
+	from sourceSets.main.runtimeClasspath
+	into '.'
+}