Don't use relative imports like `../foo.h` as those depend on the
relative position of both files. Rather than that use imports relative
to the `src` directory, which explicitly is part of the include
directories.
- Enable LVGL animation (and disable groups, which were not used), and set the speed.
- Fix disc animation and progress display by initializing lastIncrement at 0 (a random value will be used otherwise, in release build)
If the buffer does not contain any \0, the whole buffer is considered to be the message of the notification. A default title will be displayed in the notification app.
