[feature] give separate lines for levelname and author in level announcement

[elf-alchemist]

As a demonstration of this limit, playing 50 Shades of Graytall with Devalaous' quality-of-life patch results in the following:

16:9

21:9

32:9

[rfomin]

It seems that some of these level names don't work with 4:3 aspect ratio, even without the author part.

[fabiangreffrath]

However, I agree that it should be possible to split the level name + author string into two lines if it won't fit on screen on a single line. The fact that even the level name alone may not fit on one line is a different topic.