🗺️☔️ ↝ [SSG-1 SSG-2]: Chapter 1: Migration to Earth API routes

[Gizmotronn]

Backend components for Signal-K/client#155

More data added and some basic Flask routes for uploading data and pulling content. Containerised to run alongside signal-k/client (parent repo)

_{Huly®: STAR_-135}

[height]

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[Gizmotronn]

It all builds correctly, obviously there's a few files that have been removed, but I'll check back on those soon (maybe)