[P099] Migrate to ESPEasy_touchHandler

[tonhuisman]

Features:

• Migrate P099 to use ESPEasy_touchHandler, like P123 has (ESP32 only!)
• Convert existing object configuration (ESP32 only!)
• [P123] Minor code optimizations

TODO:

• Testing, and more testing (help wanted!)
• Update documentation

[chromoxdor]

• Testing, and more testing (help wanted!)

What kind of help do you need?

Edit: Just realised it’s about the touchscreen I don’t possess, so no help from me here....

[tonhuisman]

What kind of help do you need?
...so no help from me here....

At least you tried, that's a big plus 👍