Add .jar for clientGUI

Jenkinsfile

@@ -14,6 +14,9 @@
             sh 'echo "BUILDING TRACKER"'
             sh 'echo Main-Class: tracker/Tracker > MANIFEST.MF'
             sh 'jar -cvmf MANIFEST.MF tracker.jar $(find bin/ -maxdepth 1 -mindepth 1 -printf "-C bin %f\n")'
+            sh 'echo "BUILDING CLIENT GUI"'
+            sh 'echo Main-Class: gui/Gui > MANIFEST.MF'
+            sh 'jar -cvmf MANIFEST.MF clientGUI.jar $(find bin/ -maxdepth 1 -mindepth 1 -printf "-C bin %f\n")'
             sh 'echo "CREATING sources.tar.gz"'
             sh 'tar -zcvf sources.tar.gz src/'
           }
@@ -29,6 +32,7 @@
           archiveArtifacts artifacts: 'client.jar', fingerprint: true
           archiveArtifacts artifacts: 'server.jar', fingerprint: true
           archiveArtifacts artifacts: 'tracker.jar', fingerprint: true
+          archiveArtifacts artifacts: 'clientGUI.jar', fingerprint:true
           archiveArtifacts artifacts: 'sources.tar.gz', fingerprint: true
         }
       }