[done] * import current status of opiecore, opienet and opieui
 [done] * add contents of libopie1 to libopie2 and functionally split it
 [done] * make libopie2 a drop-in-replacement for libopie1
        * add doxygen documentation to all classes
        * add functionality from libqpe to libopie2
        * make libopie2 a drop-in-replacement for libqpe1