[DBBuilder] Support other datasources

[derekantrican]

UKClimbing.com seems to be the biggest database of crags for the UK (but also seems to have data for all over the world). Maybe we can support this?

• Would require a separate .csproj for parsing UKClimbing.com
• Would require code to merge both databases (MountainProject & UKClimbing) to search both at once

[derekantrican]

UKClimbing.com has no public API. Here is a scraper I've found on GitHub: https://github.com/hcooper/ukclimbing-logbook (PHP)

The hard thing about this is that there isn't a clear "starting point" page (at least that I've found so far. The closest I've found is this: https://www.ukclimbing.com/logbook/map/

[derekantrican]

Also there is RedRiverClimbing.com which exclusively has routes from Red River Gorge