add ui scale option

explicit UI/DPI scaling

source cleanup

object enum - use static reference

make menu background framerate-independent

remove dead CI urls from readme

Update maven.yml

move from jdk 11 to 23 (and bump maven artefact versions)

Update maven-build-exe.yml (v4)

add confirmation menu scenes

settings menu backgrounds

Merge pull request #168 from georgeness/master

Accidentally took away micycle's credit

Added controls menu and empty graphics menu

Create maven-build-exe.yml