[Tractor mod] Support of Custom TerrainFeature

[jpparajeles]

Hello, I currently have a mod that creates a Custom Terrain Feature, I'm not using any Harmony patches at the moment, so compatibility with the Tractor mod seems complicated at this point.

Could it be possible to create an Interface on the Tractor mod that allows an entrypoint for Custom Terrain features?. Something like

public interface ICustomAttachmentBehavior
{
    bool ApplyTool(IAttachment attachment, Tool? tool, int damage, Vector2 tileLocation)
}

This would require that IAttachment be made public so other people can access it

I'm willing to draft a PR with the approach if you think it would be a good addition, let me know if this is a good forum to discuss the technical details, if this is feasible