static assert to check OSAL_QUEUE_DEF's queue_depth parameter < 256

enable HOST_HCD_XFER_INTERRUPT by default (previously only enabled with HID), as it is widely used
implement tusbh_cdc_is_busy
add compilation switch in usbh enumeration for hub
rewrite CDC serial application to address usb-serial race condition

tinyusb/osal/osal_none.h

@@ -263,6 +263,7 @@ typedef osal_queue_t * osal_queue_handle_t;
 
 // use to declare a queue, within the scope of tinyusb, should only use primitive type only
 #define OSAL_QUEUE_DEF(name, queue_depth, type)\
+  STATIC_ASSERT(queue_depth < 256, "OSAL Queue only support up to 255 depth");\
   type name##_buffer[queue_depth];\
   osal_queue_t name = {\
       .buffer    = (uint8_t*) name##_buffer,\