- FunctionBasedURPConnection is used to enable a client to open a URP
  connection to a fresh Kit instance in COOL.
- This URP connector can be used with that and
  https://github.com/CollaboraOnline/online/pull/6992 to use a Java Uno
  Remote Protocol client over websockets
- For interoperability with existing Collabora Online websockets a
  prefix (urp ) is added to each message sent and a similar prefix
  (urp: ) is expected on each message recieved. This allows sending over
  the same websocket as other data is being transmitted through. If you
  are writing a bridge to work with this, you will need to add/strip the
  prefixes accordingly
- This commit uses Java WebSocket
  (https://github.com/TooTallNate/Java-WebSocket) to send data over
  websockets.

Change-Id: I2bda3d0b988bef7883f9b6829eeb5b7ae8075f27
Signed-off-by: Skyler Grey <skyler.grey@collabora.com>
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/151171
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolan.mcnamara@collabora.com>