[Maps] Add super-fine option to grid/cluster layer

[thomasneirynck]

This replaces the original #76526 due to merge errors.

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Summary

Adds super-fine option to grids/clusters and heatmaps layers. This uses vector-tiles as the back-end data format.

Addition of the super-fine option

The super-fine option currently returns tiles with a resolution of 128x128 = ((2^7)^2) . This is well under the limit of 256x256 of Elasticsearch.

Making this much finer though will start to create sparsity-artefacts when zooming in on data. This probably needs some experimentation.

Adds a new backend route mvt/getGridTile

This produces the tile. It either returns a tile with cluster-bubbles or with rectangular cells, depending on the ESGeoGridSourceDescriptor.requestType-configuration.

Moved ES-response decoding utils to common for reuse on server-backend.

Enabled for grid and cluster layer

(not heatmap just yet)

ESGeoGridSource now implements ITiledSingleLayerVectorSource

Styling limitation on countable-metrics

Countable metrics cannot be auto-styled using a backend meta-call for ES extented-stats This runs into a similar limitation as for 3rd party vector tiles, where colors can only be configured with custom-ranges (iso. default color-ramps) and that size cannot be styled by-value (cf. #62867).

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Checklist

Delete any items that are not applicable to this PR.

• Any text added follows EUI's writing guidelines, uses sentence case text and includes i18n support
• [ ] Documentation was added for features that require explanation or tutorials
• Unit or functional tests were updated or added to match the most common scenarios
• This was checked for keyboard-only and screenreader accessibility
• This renders correctly on smaller devices using a responsive layout. (You can test this in your browser
• This was checked for cross-browser compatibility

For maintainers

• This was checked for breaking API changes and was labeled appropriately

Todo

• test coverage
• top-terms styling not working (edge-case in how the use of supportsAutoDomain is overloaded)
• linting
• type checking

[elasticmachine]

Pinging @elastic/kibana-gis (Team:Geo)

[nreese]

LGTM
code review and tested in chrome

[kibanamachine]

💚 Build Succeeded

• continuous-integration/kibana-ci/pull-request
• Commit: 91389cb

Build metrics

@kbn/optimizer bundle module count

id	value	diff	baseline
maps	695	+1	694

async chunks size

id	value	diff	baseline
maps	3.3MB	+5.0KB	3.3MB

page load bundle size

id	value	diff	baseline
maps	301.6KB	+524.0B	301.1KB

distributable file count

id	value	diff	baseline
default	45946	+4	45942

History

• 💚 Build #76394 succeeded 796b52c
• 💚 Build #76372 succeeded 2e6cbcf
• 💔 Build #76321 failed f09e7b0
• 💔 Build #76295 failed bd26b12

To update your PR or re-run it, just comment with:
@elasticmachine merge upstream

[thomasneirynck]

also approved by #76526 (review)