implement msc device class

usbd auto stall control for not supported return from class control request
usbd implement xfer isr callback mechanism
DCD
- implement dcd multiple qtd support
- dcd dcd_pipe_stall
- implement dcd_pipe_queue_xfer
- xfer_complete_isr
- flush control endpoint if received new setup while previous transfer is not complete
change msc_cmd_block_wrapper_t flags field to dir
force full speed for easy testing

NOTEs: somehow unable to get endpoint IN interrupt with ioc

tinyusb/common/std_request.h

@@ -36,12 +36,6 @@
 */
 /**************************************************************************/
 
-/** \file
- *  \brief TBD
- *
- *  \note TBD
- */
-
 /** \ingroup TBD
  *  \defgroup TBD
  *  \brief TBD
@@ -72,7 +66,7 @@ typedef ATTR_PACKED_STRUCT(struct){
   uint16_t wLength;
 } tusb_control_request_t;
 
-//STATIC_ASSERT(sizeof(tusb_control_request_t) == 8, "mostly compiler option issue");
+STATIC_ASSERT( sizeof(tusb_control_request_t) == 8, "mostly compiler option issue");
 
 // TODO move to somewhere suitable
 static inline uint8_t bm_request_type(uint8_t direction, uint8_t type, uint8_t recipient) ATTR_CONST ATTR_ALWAYS_INLINE;