Add support of gpio for esp32s3(728). Adjust some pins and comments in test_gpio.c. Add support for gpio functions for gpio19 and gpio20. Update S3 programming guide Peripheral API: gpio and sigmadelta. Add unit test for input and output function of S3 USB pins(GPIO19 and GPIO20) and C3 USB pins(GPIO18 and GPIO19). Adjust input only test in test_spi_master.c.