More Authentication Options for UI access

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- [X] I have checked the [current issues](https://github.com/ansible/aap-eda/issues) for duplicates.
- [X] I understand that EDA-Controller is open source software provided for free and that I might not receive a timely response.

### Feature type

New Feature

### Feature Summary

Hello!

I am really enjoying this event driven automation controller now - however an immediate requirement I see us needing is the ability to leverage more authentication options for the UI login as opposed to just using local users. Similar to whats available in AAP (AWX in our case). AAD or even LDAP would be helpful to show our internal security departments that the application meets their requirements/standardization.

Thanks for the consideration!

### Steps to reproduce

User Login - only local available

### Current results

Only available to use local accounts as opposed to something like AAD which provides MFA in our case

### Sugested feature result

Provide the ability to use Azure AD settings or LDAP for UI access

### Additional information

_No response_

The issue names no files, tests, or entry points. Start by tracing the existing local-user UI login, then define Azure AD or LDAP support and verify that the selected external provider can authenticate UI users.

Written by the indexing model from the issue text.