schroedinger: add recipe

Originally based on the recipe from OE-Classic. Changes from that
version:

* Remove packaging of gstreamer plugin that was removed in 1.09
* Inherit pkgconfig since pkg-config is being used
* Set more appropriate LICENSE
* Add LIC_FILES_CHKSUM
* Add SUMMARY
* Optimise out inc file since it doesn't seem particularly useful to
  have one for this recipe

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>