Replace hardcoded urls in .well-known with placeholders who are obviously placeholders

[andrea-dintino]

Problem

Currently in the .well-known files, there are some URLs that can be confusing for the users, as well as an a public key that can't work.

Therefore, for each of the .well-known files:

• [ ] replace https://issuer1.zenswarm.forkbomb.eu with url-of-credential-issuer and replace the value of kid with issuer-public-key

• [ ] replace https://authz-server1.zenswarm.forkbomb.eu with url-of-authz-server and replace the value of kid with authz-server-public-key

• [ ] replace https://relying-party1.zenswarm.forkbomb.eu with url-of-relying-party and replace the value of kid with relying-party-public-key

• [ ] When the above is done, update the tests accordingly.

[puria]

It would be very helpful to have a small check that displays a HUGE warning box when these values are not replaced, alerting the user that the .well-known configuration is broken.

This feature would save a significant amount of debugging time. When it comes time to implement this, we can discuss the details, perhaps by using an .autorun script.