* Create cmake target ppfw and oci It will build an OCI ppfw package to be flashed or shared on test-drive Additionally some minor cmake cleanup And updated gitignore to allow multiple build folders * Make ppfw / oci build default
* enabled usb clock * added usb stack to application * fixed pll0usb clock setup * implemented serial usb handshake * implemented serial communication * integrated chibios shell * implemented device reset * implemented enter dfu mode * implemented hackrf mode command * implemented flash command * implemented memory manipulation * implemented button control * fixed mode change * improved reset behavior * implemented directory commands * implemented file commands * improved data communication * refactorings