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/device/dcd_lpc175x_6x.c

@@ -187,8 +187,8 @@ tusb_error_t dcd_init(void)
 {
   //------------- user manual 11.13 usb device controller initialization -------------//  LPC_USB->USBEpInd = 0;
   // step 6 : set up control endpoint
-  endpoint_set_max_packet_size(0, TUSB_CFG_DEVICE_CONTROL_PACKET_SIZE);
-  endpoint_set_max_packet_size(1, TUSB_CFG_DEVICE_CONTROL_PACKET_SIZE);
+  endpoint_set_max_packet_size(0, TUSB_CFG_DEVICE_CONTROL_ENDOINT_SIZE);
+  endpoint_set_max_packet_size(1, TUSB_CFG_DEVICE_CONTROL_ENDOINT_SIZE);
 
 	// step 7 : slave mode set up
 	LPC_USB->USBEpIntEn      = (uint32_t) BIN8(11); // control endpoint cannot use DMA, non-control all use DMA