Feature/add linestrings into roadworks

[juhomakkonen]

Render linestrings

Separate linestrings from roadworks data & render those on the map.

Trello card 591

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Breakdown:

Render linestrings

1. src/components/MobilityPlatform/Roadworks/Roadworks.js
   • Get basic linestrings from data, parse into nested array & render lines on the map in polyline format. Get coordinates for markers from that data as well.