Separate server and redirect URIs in AuthHttpServer

[npeshkov]

1. What GitHub issue is this PR addressing? Make sure that there is an accompanying issue to your PR.

   Fixes SNOW-2194055: AuthServer listens on redirect URI instead of localhost during OAuth Code flow #2396

2. Fill out the following pre-review checklist:

   • I am adding a new automated test(s) to verify correctness of my new code
   • I am adding new logging messages
   • I am adding a new telemetry message
   • I am modifying authorization mechanisms
   • I am adding new credentials
   • I am modifying OCSP code
   • I am adding a new dependency

3. Please describe how your code solves the related issue.

   Allowing redirect URI to be different from server URI allows users to provide non-localhost redirect URIs (common in cloud IDEs) without preventing the server to start up on localhost.

   • Backwards compatible.
     • Default server URI host is localhost, which is the same as what users used to provide (non-localhost does not work).
     • Server's port is the port in the redirect URI (or random), which is the same as before.

Note: I couldn't run integration and auth tests locally, would need you help with that.

[github-actions]

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[npeshkov]

I have read the CLA Document and I hereby sign the CLA

[dlouseiro]

Couldn't we use an f string here?