Moving all dockerfiles into a "build-files" directory

[erinyoung]

This is updating the main file structure for this repository.

After a little consideration, I think updating the file structure is required BEFORE updating the github actions looking for new dockerfiles - otherwise each Dockerfile would be built.

[erinyoung]

This PR is very large, but only because so many files were renamed.

Notable changes:

1. The github actions that operate through cron jobs now will only run if connect to StaPH-B/docker-builds (not on any forks)
2. All bioinformatic tools are in the recipes directory - so 99% of the changes are renaming files
3. parsnp/README.md was deleted as this file is found in each version subdirectory
4. artic-ncov2019-medaka and artic-ncov2019-nanopolish now have a 1.1.0 subdirectory and their Dockerfile has been moved into that subdirectory
5. chmod -x was run on all Dockerfiles to remove all executability

[Kincekara]

@erinyoung where are the dockerfile templates? Are you planning to add them later?

[erinyoung]

Oh no! I didn't think I did anything to them! Did I accidentally delete them?

[Kincekara]

I couldn't see them. In any case, it may be good to have those templates outside the recipes folder.

[erinyoung]

I can't see where I've moved them, so they should be where they currently are

[Kincekara]

@erinyoung I am sorry, It's my mistake. I was trying to see changes in the pull request. When I checked your branch, I didn't see any problem.

[erinyoung]

The subdirectory is now 'build-files'!