Veles urls with credentials

[alessandro-Doyensec]

This PR adds the logic for detecting URLs containing credentials.

Note

The newly introduced package github.com/google/osv-scalibr/veles/secrets/urlcreds/validators/httpauth implements logic to:

1. Parse WWW-Authenticate headers containing server challenges
2. Generate standards-compliant responses

See RFC 7616: HTTP Digest Access Authentication

[alessandro-Doyensec]

Hello @erikvarga , thanks for the review.

There are still some conversations left open that require your attention.

Apologies for the trouble, but due to the scope of the validator, there are a couple of nuances that need to be addressed.

[alessandro-Doyensec]

Hello @erikvarga, beside #1651 (comment) and the conflicts, this PR should be ready to merge.

Please let me know if you have any updates or if there is anything else me to address.

[erikvarga]

I'll try to import it and see what the internal tests think

[alessandro-Doyensec]

Hello @erikvarga

I see this has been hanging for a while, do you need anything from my side?

[erikvarga]

Nothing to do from your side, it just took a while to get all the approvals for importing the library. If everything goes well this will be merged shortly.

[erikvarga]

Merged in f9e7ab2