Merge Pull Requests for ESP32 / ESP8266

[udoklein]

Zio Tibia provided to PRs for ESP8266 and ESP32 respectively. I can not verify if they work on real hardware. The code looks good though. Is there anyone who can try these PRs and confirm if this works as it should?

[ziotibia81]

Added PR for RP2024, testers are welcome.

• ESP32 patch Experimental ESP32 support using espressif arduino-esp32 core #48
• ESP8266 patch Experimental ESP8266 support using Arduino core for ESP8266 #49
• RP2040 patch Experimental RP2040 support using Earle F. Philhower, III Raspberry Pi Pico Arduino core #51