Added header files to CMakeLists.txt's, added velocity sample and hold.
Fixed CMakeLists.txt's added include to stk, fixed reference to Stk::DONE
Fixed CMakeLists.txt's referencing stk_mjbpatch
Fixed CMakeLists.txt's
Restructured include dir to resemble directory structure of actual stk package
Added cmake Find modules for lv2-gui/lv2-plugin
1st checkin