Add results map

[oliverroick]

Implements #48

• Adds map component, based in react-map-gl. It uses MapboxGL with a DevSeed token, we can change this to a different map provider and MapLibre if necessary. The map clusters the points, and clusters are interactive: When you click it zooms to the results.
• I made small changes to the table so it fits next to the map, If the map is visible, the "Recorded" column is removed and the width of the "Site name" column is fixed to 300px. I also applied word-wrap to the "Site name" column, so the long hyphenated site names (for example, Little-Llangothlin-Reserve-Warra-National-Park (Dry-B)) fit in the table. (@LanesGood if you're still around, can you have a look if that looks fine)

[geohacker]

@oliverroick this looks great to me. I wonder if we should mention that the features on the map are only the results on this current page. I also wonder if it might be more useful to see all the coverage than just the current page. What do you think?

cc @LanesGood