Use a modern moduleResolution strategy

[birkskyum]

Currently, the tsconfig is set to use moduleResolution: "Node", which is deprecated:

Going to a modern module resolution such as NodeNext (or Bundler) would likely allow us to update dependencies like:

• Bump geojson-vt from 3.2.1 to 4.0.0 #4263 (update, fixed by : Bump geojson-vt from 3.2.1 to 4.0.2 #4292)

And be a step towards

• ECMAScript Modules #1595

In practice "NodeNext" is more strict than what we do now, and would demand us to add file extensions (.ts/.js) on relative imports.