Author: Tomer Shalev
Adds a USB HID sample application, a plugin tha allows to send HID commands while connected in non-storage mode.
This also removes the HID stuff in the debug menu. Testing is now easily doable from the plugin
Also general HID updates
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21953 a1c6a512-1295-4272-9138-f99709370657
