Add non-working jitsi meet bridge

contrib/jitsimeetbridge/jitsimeetbridge.py

contrib/jitsimeetbridge/syweb-jitsi-conference.patch

contrib/jitsimeetbridge/unjingle/.swp

contrib/jitsimeetbridge/unjingle/strophe.jingle.sdp.js

contrib/jitsimeetbridge/unjingle/strophe.jingle.sdp.util.js

contrib/jitsimeetbridge/unjingle/strophe/XMLHttpRequest.js

contrib/jitsimeetbridge/unjingle/strophe/base64.js

contrib/jitsimeetbridge/unjingle/strophe/md5.js

contrib/jitsimeetbridge/unjingle/strophe/strophe.js

contrib/jitsimeetbridge/unjingle/unjingle.js