waveshareteam/ESP32-P4-Platform ? reverse-engineered prompt

Build me a clean example repo for Waveshare ESP32 P4 boards that helps someone get the board up and running fast.

I want the project to include simple starter apps for checking the board, GPIO, UART, I2C, SD card, Wi Fi, Ethernet, audio, display, LVGL, camera, and a basic video stream demo. Make it easy to build and flash from the command line, and add clear instructions for first time users so they know what to install, how to choose the right board, and how to test each feature.

Please organize it so the examples are easy to find, with separate folders for the different build styles if needed, and add notes for any board specific settings like display, sensor, or network setup. If there are compatibility differences between board variants, call those out clearly in the docs. Include a first run check example and a few helpful troubleshooting tips. If you need to look up current docs online, go ahead.