What does this PR do and why?

_Describe in detail what your merge request does and why.
Fixes #840

Azure AD is being deprecated in favour of Entra ID. They function identically but with a different name.

Screenshots or screen recordings

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How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

1. Clean your db ./scripts/clean_dev.sh
2. edit config/authentication/auth_config.yml to add entra_id to development: -> omniauth_providers:
3. edit your credentials file

EDITOR="vim --nofork" bin/rails credentials:edit --environment development

Add the following fields. Message me directly for the secret credentials.

entra_id:
  client_id: secret
  client_secret: secret
  tenant_id: secret

4. run irida next
5. click the sign in button for Entra ID
6. Go to http://localhost:3000/-/profile and verify that a user account has been created for you with the relevant provider info.
   

Testing the Migration

1. on the main branch, clean your db with ./scripts/clean_dev.sh
2. edit auth_config.yml to have omniauth_providers: [azure_activedirectory_v2] for development:
3. edit your credentials for development to have the required fields under azure:
4. run irida next, and sign in with Azure AD
5. verify you have the azure_activedirectory_v2 provider on your profile
6. Note your Authentication Provider UID
7. sign out of your account
8. stop irida next, checkout the oauth_entra_id branch
9. run the migration with rails info db:migrate
10. run irida next
11. sign in using Entra ID
12. verify that your profile reflects the change to entra_id
13. verify that your Authentication Provider UID is now the concatenation of the tenant_id and your old Authentication Provider UID

PR acceptance checklist

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