[Camera] Variable for rotation amount

[PxlBuzzard]

Can we remove the hardcoded 90.radians and move it to a YAML variable?

auto nextRot = prevRot.rotatey( 90.radians );

[StencilChick]

@Zedoctor I turned it into a variable but it breaks with any value not 90 degrees. Do you know why?

[wozniakty]

I can't think of any reason why non-90 values wouldn't work. It's pretty straightforward code so I don't see what would be causing an issue :/ rotatey should be able to take any value, not just 90.