add new gifs for eln

src/main/resources/ui/util/elncapacitor.gif

src/main/resources/ui/util/elncccs.gif

src/main/resources/ui/util/elnccvs.gif

src/main/resources/ui/util/elngyrator.gif

src/main/resources/ui/util/elnidealtransformer.gif

src/main/resources/ui/util/elninductor.gif

src/main/resources/ui/util/elnisource.gif

src/main/resources/ui/util/elnnullor.gif

src/main/resources/ui/util/elnresistor.gif

src/main/resources/ui/util/elntransmissionline.gif

src/main/resources/ui/util/elnvccs.gif

src/main/resources/ui/util/elnvcvs.gif

src/main/resources/ui/util/elnvsource.gif