[Feature Request]: Improve Documentation on SSO

[Frooodle]

Feature Description

Improve docs on SSO to show example configuration for keycloak, authentik , and okta etc

Examples for authentik

 issuer: http://192.168.1.133:9000/application/o/stirlingpdf/ # set to any provider that supports OpenID Connect Discovery (/.well-known/openid-configuration) end-point
    clientId: 5ibI9L0 # Client ID from your provider
    clientSecret: DFSD3B7MKLkWuEAasxxm2hghuzulPr37jdkrojPsGBz9MGwkfc # Client Secret from your provider
    autoCreateUser: true # set to 'true' to allow auto-creation of non-existing users
    blockRegistration: false # set to 'true' to deny login with SSO without prior registration by an admin
    useAsUsername: email # Default is 'email'; custom fields can be used as the username
    scopes: openid, profile, email # Specify the scopes for which the application will request permissions
    provider: authentik # Set this to your OAuth provider's name, e.g., 'google' or 'keycloak'

  saml2:
    enabled: true # currently in alpha, not recommended for use yet, enableAlphaFunctionality must be set to true
    autoCreateUser: true # set to 'true' to allow auto-creation of non-existing users
    blockRegistration: false # set to 'true' to deny login with SSO without prior registration by an admin
    registrationId: stirling
    idpMetadataUri: http://192.168.1.133:9000/application/saml/stirlingpdf/metadata/
    idpSingleLogoutUrl: http://192.168.1.133:9000/application/saml/stirlingpdf/slo/binding/post/
    idpSingleLoginUrl: http://192.168.1.133:9000/application/saml/stirlingpdf/sso/binding/post/
    idpIssuer: authentik
    privateKey: C:/Users/systo/git/Stirling-PDF/private_key.pem
    spCert: C:/Users/systo/git/Stirling-PDF/certificate.pem
    idpCert: C:/Users/systo/git/Stirling-PDF/certificate.pem

Must show screenshots of setup in SSO app as well

Why is this feature valuable?

No response

Suggested Implementation

No response

Additional Information

No response

No Duplicate of the Feature

• [x] I have verified that there are no existing features requests similar to my request.