Implement support for the Federation Extension

[m-mohr]

In the EOEPCA+ project, we made an evaluation of the federation-related functionality available through the openEO Python Client.
The Federation Extension can be found here: https://github.com/Open-EO/openeo-api/blob/draft/extensions/federation/README.md

The following issues have been identified for the programatic access in Python:

• GET / - Show federation backends (federation) -> possible but undocumented RESTCapabilities undocumented #610
• federation:missing can't be accessed through the corresponding functions for the following endpoints:
  • GET /collections
  • GET /processes
  • GET /process_graphs
  • GET /files
  • GET /jobs
  • GET /jobs/:id/logs
  • GET /services
  • GET /services/:id/logs
• federation:backends can't be accessed through the corresponding functions for the following endpoints:
  • POST /validation

The following issues have been identified for the programatic access through the UI interface in notebooks such as Jupyter:

• federation:missing can't be accessed through the corresponding functions for the following endpoints:
  • GET /collections
  • GET /processes
  • GET /file_formats
  • GET /process_graphs
  • GET /files
  • GET /jobs
  • GET /jobs/:id/logs
  • GET /services
  • GET /services/:id/logs
• federation:backends can't be accessed through the corresponding functions for the following endpoints:
  • POST /validation (=> has no UI component in the Python client, will warn in Python)
  • GET /udf_runtimes per version
  • GET /services/{id}

Related issue for the upstream issues in Vue Components: Open-EO/openeo-vue-components#97

[soxofaan]

merged #716 with first bunch of additions to support federation extension

[soxofaan]

Some initial docs are at https://open-eo.github.io/openeo-python-client/federation-extension.html

[soxofaan]

planned to cover in current sprint:

• federation:backends can't be accessed through the corresponding functions for the following endpoints: POST /validation

[soxofaan]

most important parts of "programatic access in Python" are now covered I think.
Going to unassign me for now

[JeroenVerstraelen]

Most of the remaining TODOs are jupyter-integration related (Javascript/Vue). We don't have the expertise in the openEO team to work on these.

[m-mohr]

I'll try to cover some of these as part of the next EOEPCA quarter.

[m-mohr]

I've implemented all open Jupyter-related tasks through #771, so handing back to VITO :-)