feat(SAML): Support attributes with namespace

[Dschoordsch]

Description

Support Microsoft Entra ID (formaly Azure Active Directory) out of the box. They're sending emailaddress and name prefixed with the http://schemas.xmlsoap.org/ws/2005/05/identity/claims/ namespace. Map those to values we expect.

Instead of stripping all URI prefixes, I decided to just map these explicitly to avoid cases where there could be duplicate values in different namespaces (although extremely unlikely)

Demo

https://www.loom.com/share/6d23e89c31d84ef0b2784e2139d781fb?sid=d850e510-ba6c-47be-b85f-ca665a5edad9

Testing scenarios

• set up Microsoft Entra ID and test...
• https://www.loom.com/share/37ef6f0bccc742358987df3ce0c00a96?sid=d77edb31-6d35-4d4a-a6e7-a32f0012699b

Final checklist

• I checked the code review guidelines
• I have added Metrics Representative as reviewer(s) if my PR invovles metrics/data/analytics related changes
• I have performed a self-review of my code, the same way I'd do it for any other team member
• I have tested all cases I listed in the testing scenarios and I haven't found any issues or regressions
• Whenever I took a non-obvious choice I added a comment explaining why I did it this way
• I added the label One Review Required if the PR introduces only minor changes, does not contain any architectural changes or does not introduce any new patterns and I think one review is sufficient'
• PR title is human readable and could be used in changelog

[mattkrick]

LOVE IT!