Move specific xcube gen input processors into separate repos

[forman]

xcube gen input processor implementations are often very specific with respect to the supported data input format. Some of them require physical datasets for testing to be included in the sources. xcube on the other hand provides a generic API and CLI and does not rely on physical test datasets.

Input processors are also developed by different development teams and should therefore have different repositories with own responsibilities and issues.

Move specific input processors should be moved into separate repositories.

[forman]

Revise xcube GitHub project

[forman]

Desired approach:

• Create new repos for each input processor except "default":

  • xcube-gen-rbins (for SEVIRI, ...)
  • xcube-gen-vito (for S2+)
  • xcube-gen-bc (for S3+ SNAP OCLI, ...)

• Put in each repo the following files and adjust content. Here as example the repo xcube_gen_rbins

  • setup.py - that defines extension point xcube_plugins
  • environment.yml - whose only dependency will be xcube
  • xcube_gen_rbins/**/* - contains tree under current xcube/api/gen/rbins
  • test/**/* - contains tree under current test/api/gen/rbins
  • README.md - describe purpose and installation, etc
  • CHANGELOG.md - initially empty
  • LICENSE, .gitignore , .flake8 - copy
  • .travis.yml - adjust, must install xcube first

• Setup Travis CI for each repo

• Optional: Create a new template repo for xcube gen plugins