libsoup.recipe: Add a python3 wrapper script on Windows
libsoup.recipe: Add a python3 wrapper script on Windows

Fixes https://gitlab.freedesktop.org/gstreamer/cerbero/issues/128

nirbheek/cerbero,nirbheek/cerbero,atsushieno/cerbero,fluendo/cerbero,fluendo/cerbero,GStreamer/cerbero,GStreamer/cerbero,fluendo/cerbero,GStreamer/cerbero,atsushieno/cerbero,nirbheek/cerbero,atsushieno/cerbero,fluendo/cerbero,GStreamer/cerbero,atsushieno/cerbero,fluendo/cerbero,GStreamer/cerbero,nirbheek/cerbero,atsushieno/cerbero