package/libuwsc: new package

Signed-off-by: Jianhui zhao <zhaojh329@gmail.com>
[Thomas:
 - add entry in DEVELOPERS file
 - be more explicit with SSL options
 - drop logic around luainterpreter since luajit is not properly
   detected]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>