adding subclass RNDIS-CDC driver API

- implement init
- close
- xfer_isr
- open

adding waiting for notification after send rndis_initalize_msg

tinyusb/class/cdc_rndis_host.h

@@ -54,7 +54,22 @@
  extern "C" {
 #endif
 
+//--------------------------------------------------------------------+
+// RNDIS-CDC Driver API
+//--------------------------------------------------------------------+
+#ifdef _TINY_USB_SOURCE_FILE_
+
+typedef struct {
+  OSAL_SEM_DEF(semaphore_notification);
+  osal_semaphore_handle_t sem_notification_hdl;  // used to wait on notification pipe
+}rndish_data_t;
+
+void rndish_init(void);
 tusb_error_t rndish_open_subtask(uint8_t dev_addr, cdch_data_t *p_cdc) ATTR_WARN_UNUSED_RESULT;
+void rndish_xfer_isr(cdch_data_t *p_cdc, pipe_handle_t pipe_hdl, tusb_event_t event, uint32_t xferred_bytes);
+void rndish_close(uint8_t dev_addr);
+
+#endif
 
 #ifdef __cplusplus
  }