Should sidewalk-like ways be styled as sidewalks?

`highway=footway, footway=sidewalk` is styled and counted as a separate sidewalk. But sometimes sidewalks are tagged differently, like...

- `highway=path, footway=sidewalk`: https://www.openstreetmap.org/way/750544452 (https://wiki.openstreetmap.org/wiki/Tag:highway%3Dpath has discussion of this)
- `highway=path, foot=designated`: https://www.openstreetmap.org/way/1175156902
- `highway=cycleway, foot=yes`: https://www.openstreetmap.org/way/796707464

If it counts as a separate sidewalk, probably best to classify it that way and make all the logic follow from there?

The issue describes tagging variations in OSM data for sidewalks. Start by examining the code that classifies and styles sidewalk ways, likely in a data processing module. Look for logic handling `highway=footway, footway=sidewalk` and extend it to also match the listed tag combinations. Test by running the classification on example OSM ways to verify they are styled as sidewalks.

Written by the indexing model from the issue text.