New speedmap and speed variation maps

[edasmalchi]

Description

Add two new layerType in Svelte map app to match the new rt_segment_speeds derived speedmap data schema. Improves display of speed segment info via tooltips. Old layerType from legacy speedmaps retained for now.

Required for cal-itp/data-analyses#1186

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation

How has this been tested?

Successfully ran locally, including actual state and speedmap geojson on GCS.

Post-merge follow-ups

Document any actions that must be taken post-merge to deploy or otherwise implement the changes in this PR (for example, running a full refresh of some incremental model in dbt). If these actions will take more than a few hours after the merge or if they will be completed by someone other than the PR author, please create a dedicated follow-up issue and link it here to track resolution.

• No action required
• Actions required (specified below)

[github-actions]

Preview url: https://data-infra-3548--embeddable-maps-calitp-org.netlify.app

[evansiroky]

Would be nice to have the netlify preview show the proposed change, but I trust that local testing will suffice for now.

[edasmalchi]

thanks @evansiroky!

Would be nice to have the netlify preview show the proposed change, but I trust that local testing will suffice for now.

Ah yeah, it works but doesn't come with a default state to test. Adding one of the states I used to test locally does work, with netlify matching the local results: with state