The variable `title` is defined as `const char*`, which means, that
`strchr()` returns a `const char*` as well according to
https://www.cplusplus.com/reference/cstring/strchr/

But in the same line the return value is assigned to a non-const
`char*`, which shouldn't be allowed (error with `-pedantic`).

Because the `lv_label` creates an internal copy of the title sting, just
modify that one instead and replace newline in the copied string.

We get the motoroController object, so store and use it.

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.

Remove unused variables