Add zoom buttons to map on web

🚧 THIS IS A TICKET MIGRATED FROM UPVOTY. The original ticket and comments will be available for a limited time over at:
https://abrp.upvoty.com/b/request-a-feature/where-are-the-map-zoom-controls/
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I cannot see any zoom in or zoom out controls on the map?

Additional hint from ABRP_Samuel:
When using a laptop without mouse it would be nice to also zoom with zoom buttons as there is no scroll wheel.