TODO

• Add OTA flashing function
• Add async web server based on the event sourcing architecture
• Extract HTML + CSS code into files in the filesystem
• Try to run JS code
• Add favicon from the ESP32 filesystem
• Add dynamic HTML content via JS
• Add slow fade in and fade out
• Add customizable period of fade in / outs
• Refactor to classes

CLI

• "pio run -t upload" for upload source code into ESP32
• "pio run -t uploadfs" for upload files (HTML, CSS, etc) from data folder into ESP32