[UI] Adds IntelliJ plugin Component

Change-Id: Idc39c62739f248ef3bac99464b9c1dfdde927be2
Reviewed-on: http://saros-build.imp.fu-berlin.de/gerrit/1995
Reviewed-by: Stefan Rossbach <srossbach@arcor.de>
Tested-by: Jenkins CI
Reviewed-by: Christian Cikryt <c.cikryt@googlemail.com>
Reviewed-by: Holger Schmeisky <google@schmeisky.com>