Configure label types per city

[jonfroehlich]

As we add in new label types (e.g., crosswalks, pedestrian signals), we have discussed making it possibly to parameterize which label types are available for each city:

We already do this with tags but I could imagine some cities not being interested in pedestrian signals, for example, because they don't even have them in their cities.

I recall @misaugstad discussing how to best implement this in configuration files but couldn't find the Issue to link it to here.

[misaugstad]

Although there is a lot of code that assumes that all label types are being used, I think that changing most of it is very doable! Queries that have the label types hard-coded can be fixed relatively easily. I think that the hardest part will really be making a UI that is a bit more dynamic. IMO, it will be harder to make sure that things look visually appealing given a variable number of label types.

In an ideal world, we would also have something like "modules" for a tutorial, so that we can plug in some education for different label types, but that's another whole discussion ;)

Ultimately, I think that this is legitimately doable. And I'm very interested in making our tool more generalizable!

[misaugstad]

In #2869 @jonfroehlich talks more about the value of making this change, and I agree :)