New leaderboard score card design implementation
Add basic animation to new footer and buttons
OsuGame.SHEAR
A little ugly but maybe it'll do...
See `ModSelectOverlay` components.
SetUpSteps
SelectV2
Also adjusts right content width to contain those 5 mods. Not sure how to handle the extra space in the score though...to be dealt with later.
Make ctrl-up/down change speed modifier of mods
IFocusManager
TestScenePresentScore
SongSelectV2
OsuGame
TopLevelContent
ShearedButton
Also includes a test case in `TestSceneShearedButton`s to ensure the buttons' shear factors don't change on different heights (I've encountered issues with that previously).