Tweak OIDC configuration in API and dashboard

[jraddaoui]

• Allow to skip API auth. email verified check (API).
• Allow OIDC scopes configuration (dashboard).
• Add OIDC ABAC roles mapping type guard (dashboard).

Refs #1037.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 54.51%. Comparing base (58c72e8) to head (4a6578c). Report is 3 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1050 +/- ## ========================================== - Coverage 54.58% 54.51% -0.07% ========================================== Files 103 103 Lines 7510 7510 ========================================== - Hits 4099 4094 -5 - Misses 3162 3166 +4 - Partials 249 250 +1 ```

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[jraddaoui]

@djjuhasz it's probably better that you review this PR commit by commit.