- change OSAL_TASK_FUNCTION to have void* parameter (to be consistent with most popular RTOS)

- add new error enum TUSB_ERROR_OSAL_TASK_CREATE_FAILED
- move usbh_enumeration_task prototype to usbh.h
- change OSAL_SUBTASK_INVOKED_AND_WAIT behavior, will not "return" in calling task when subtask got error status.
calling task need to do that after the call
- osal_queue_receive signature from uint32_t* to void*

- implement osal_freertos.h for FreeRTOS 7.3 --> able to compile & build host_freertos
+ OSAL_TASK_FUNCTION
+ turn on FPU for M4 in both host_os_none & host_freertos (freertos requires FPU to be on to compile)
+ osal_task_create
+ OSAL_SUBTASK_INVOKED_AND_WAIT
+ SUBTASK_ASSERT
+ osal_semaphore_reset
+ osal_queue_flush
+ adding heap_1.c for memory management

tinyusb/tusb.c

@@ -72,7 +72,7 @@ void tusb_isr(uint8_t controller_id)
 void tusb_task_runner(void)
 {
   #if MODE_HOST_SUPPORTED
-    usbh_enumeration_task(); // TODO prototype
+  usbh_enumeration_task(NULL);
   #endif
 }
 #endif