Meson: fallback to libsoup subproject
I made a few patches in libsoup master to make this work. libsoup itself have 3 deps:
- libxml2: Already provided as subproject by gst-build.
- libpsl: I made a native meson build that got merged in upstream master.
- sqlite3: I think there is a wrapdb for it. In my case it's provided by the Android platform (not in NDK).