データが多すぎる場合にクラスタリング表示をする

ズームレベルを下げたときに、表示データが多すぎて意味をなしません。
できればクラスタリング表記をしたい。

例：https://docs.mapbox.com/mapbox-gl-js/example/cluster/

No file or test is named. Start by finding the map-rendering entry point and compare its behavior at lower zoom levels with the linked Mapbox clustering example. Done means dense displayed data is represented as clusters when zoomed out without losing the ability to inspect individual data at higher zoom levels.

Written by the indexing model from the issue text.