[CLI] PoC: JWT Authentication via Device Code Flow

[tomondre]

Implement a PoC in reana-cli to authenticate directly with the ESCAPE IdP using the OAuth2 Device Code Flow. The CLI should obtain a JWT token and use it for REANA server calls.

DoD

• Confirm ESCAPE IdP requirements and feasibility
• Research suitable Python libraries
• Implement working PoC with device code flow
• Token is used for CLI calls to REANA Server

[tomondre]

👀 https://github.com/tomondre/reana-client/tree/jwt

[tomondre]

TODO:

• Integrate reana-commons in the testing setup
• Make sure the terminal log has two option for using the device code:
  1. Url in a separate line than device code
  2. Url + Device Code together in the same url for easy access
     Both of the URL's should be clickable.