RUI Timer Initialize

RUI_RETURN_STATUS rui_timer_init(void *obj, void ( *callback )( void ));

@brief	This API is used to create/initialize a timer.
@return	RUI_RETURN_STATUS
@param	void *obj : timer instance void (*callback)(void): timer event callback function
@module	RAK811, RAK4200, RAK4400, RAK4600, RAK5010 and RAK8212-M.