6acd56bf8f
1. support check_mem_survive, scan, connect, disconnect host command. 2. create a host_cmd.py to valid host commands 3. add uart_drv_rx_mutex/uart_drv_tx_mutex to lock uart tx/rx 4. add host_scan_filter_match_cb() to send device infomation to host. 5. add le_gap_disconnet() 6. freertos enable check stack overflow 7. freertos increase timer task stack