Station data preview

[Nospamas]

Add preview of data to be potentially downloaded from a particular station.

Currently deployed in in development:

• YNWT: https://services.pacificclimate.org/dev/met-data-portal-ynwt/portal/
• BC: https://services.pacificclimate.org/dev/met-data-portal-pcds/app/

Primary feature changes:

• Add Preview page at /preview/<stationId>
  • Adds a preview of the station's information, its available variables and graphs of observations for a selected time period.
  • Preview is accessed via a link from the main map after selecting one.
  • Reworked some of the UI to make it more responsive during initial load or during transition from preview back to map.

Underlying code changes:

• Introduce react-router for moving between different views. At the moment this is limited to the main map / and preview /preview
• Introduce react-query to help manage component server state. State model has increased in complexity due to the different views. Added react-query to help act as a caching layer, as well as a de-duplication mechanism for ajax calls.
• Introduce Zustand for state management. Useful library to avoid much of the prop drilling that was happening before, also allows us to maintain state when switching routes by holding things such as map filters externally to the components.
• Introduce CRACO. First flagged by Quintin as a useful utility to override and make secure create-react-apps dependencies I've also added it to this project. I'm primarily using it in this project to allow aliased URLs to make imports more obvious and human readable.
• Cleaned up old class based components and replace them with functional components.
• Expanded or adjusted test suites for station filters and download URL generation

[Nospamas]

A very good thought, I'd noticed this deficiency when trying to find a specific station and this would fill that gap. I'll look into adding it in a way that doesn't make the already overly constrained table even harder to work with in the space :).

[Nospamas]

This has now been validated against @corviday 's latest changes on the station-data-portal-backend. Going to merge