Add RP2040 Support

[crusardri]

Hi!

Please, Can you add support for RP2040 chipset? (Arduino Nano Connect, RP Pico, etc...)
Thanks!

[srwi]

Hi @crusardri, currently I don't own such a device, but I will try to add support once I get my hands on one.

It would require adding RP2040 support for https://github.com/srwi/ESPEssentials first. Since this is using WifiManager, a replacement compatible with the RP2040 would be necessary here.