jp: added jp/debug commands: jp/debug hierarchy contain commands useful for developping and debugging. first commands are jp/debug/bridge: - "method" allows to call a bridge method, args are parsed as python arguments (using eval). - "signal" do the same to send a signal from backend, using the new debug plugin.

Use this module to temporary store files that need to be integrated to other
projects such as Wokkel.

For example, the changeset that introduced this folder adds RSM (XEP-0059)
support to Wokkel. The files in sat.tmp.wokkel are imported over the initial
wokkel files from sat.plugins.__init__.py