[FEATURE] Allow customization of the OpenMapTiles schema used for base map

[greg-h-k]

Is your feature request related to a problem?

When using the default OpenSearch map as a base layer, there are no street names or other additional metadata provided. There are a lot of potential layers offered via OpenMapTiles that could provide valuable additional information, such as street names via the transport_name schema for instance. See https://openmaptiles.org/schema/

What solution would you like?

If it was possible for an author to specify which additional layers to include, this would allow users to bring in the information they required.

What alternatives have you considered?

Alternative approaches are to self-host or use third party web servers.

Do you have any additional context?

Whilst it is possible to use alternate map servers, such as https://tiles.maps.opensearch.org/tiles/{z}/{x}/{y}.png, to get a more detailed map, this only supports up to zoom level 14, which may not show enough granularity for most use cases.

[dblock]

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