WDP Remote Display U2.4 Modular

Required libraries:
- ProjectUNION Core 0.3.1
- AiEsp32RotaryEncoder
- Bounce2
- Adafruit GFX
- Adafruit SSD1306

This project must not require:
- ProjectUNION MQTT
- PubSubClient
- ProjectUNION DCC
- NmraDcc

Test:
1. Compile and note program and RAM size.
2. Upload and test WiFi and web configuration.
3. Test Win-Digipet connection.
4. Test OLED display.
5. Test rotary encoder and all buttons.
6. Test all three languages.
7. Test OTA.
