Change rail quality

[WhistleWiz]

Adds options to change the quality of the track.

Since this alters the geometry of the rails (by scaling it), it is possible this will affect physics.

I have yet to test this code but thought of making a PR to get some early feedback.

[WhistleWiz]

On an additional note, should there also be an option to change the track bed quality? Similar options (kink scale and frequency) are available in BaseType, and should be able to do exactly this.

[Insprill]

Everything looks good to me at a glance. Would it make sense to tie track bed quality to the rail quality?

[WhistleWiz]

I thought about that, but I'd honestly need to see how it looks ingame. Hopefully also not too much contrast when next to switches...

[WhistleWiz]

There's an issue I can't figure out, but it seems to only apply the changes after going into the game and back to the menu again.

[WhistleWiz]

That issue is now fixed, also covers the ballast width not changing.
The EquiPointSet for the track bed and quality was being cached on Awake. When RailwayMeshGenerator searched for RailTrack objects, Awake had already been called on them and so couldn't be changed.
The whole loop was thus moved to an Awake patch on each track.