desktop: Added an initial desktop file

This file will be needed by downstreams.
The path is, obviously, dependent on where the downstram puts it.
One way of editing the file is to execute
desktop-file-edit --set-key Exec --set-value /usr/bin/foo.

no.mifi.losslesscut.desktop

@@ -0,0 +1,12 @@
+[Desktop Entry]
+Name=LosslessCut
+Comment=simple video editor to trim or cut videos
+Exec=/app/bin/run.sh
+MimeType=video/mpeg;video/x-mpeg;video/msvideo;video/quicktime;video/x-anim;video/x-avi;video/x-ms-asf;video/x-ms-wmv;video/x-msvideo;video/x-nsv;video/x-flc;video/x-fli;video/x-flv;video/vnd.rn-realvideo;video/mp4;video/mp4v-es;video/mp2t;application/ogg;application/x-ogg;video/x-ogm+ogg;audio/x-vorbis+ogg;application/x-matroska;audio/x-matroska;video/x-matroska;video/webm;
+Icon=no.mifi.losslesscut
+Terminal=false
+Type=Application
+Encoding=UTF-8
+Categories=AudioVideo;AudioVideoEditing;
+Keywords=trim;codec;cut;movie;mpeg;avi;h264;mkv;mp4;
+StartupWMClass=losslesscut