Add `max_size` restriction for custom schemas [FEATURE]

[quincylvania]

We're using min_size over at OpenTrailMap to progressively show POIs for notable parks at the given zoom level. This works great when the park is contained in the viewport (example at z4):

However, once we get zoomed in far enough it doesn't make sense to show a central point marker anymore (example at z18):

We could probably filter these out in MapLibre but the more efficient solution would be to exclude them from the tiles with a parameter like max_size.