Support new SSO logic

[guyp-descope]

Description

Support the new SSO logic which include the following:

• Auth SDK:
  • Auth.SAML().Start(..) will now act based on tenant authType method (saml or oidc)
  • The above SAML interface is now marked as deprecated
  • Added new SSOSP interface with the same logic as SAML interface (which also act based on tenant authType method
    (saml or oidc))
• Management SDK:
  • Marked the following functions as deprecated:
    Management.SSO().GetSettings(..), Management.SSO().ConfigureSettings(..), Management.SSO().ConfigureMetadata(..), Management.SSO().ConfigureMetadata(..)
  • Created the new saml/oidc configuration function:
    • Load tenant authentication configuration: Management.SSO().LoadSettings(..)
    • Set new tenant authentication configuration:
      • Saml: Management.SSO().ConfigureSAMLSettings(..)
      • Saml by using metadata: Management.SSO().ConfigureSAMLSettingsByMetadata(..)
      • Oidc: Management.SSO().ConfigureOIDCSettings(..)

Must

• Tests
• Documentation (if applicable)

[dorsha]

Very nice!
Few comments.

[guyp-descope]

I merge this branch with the main branch that includes the multiple domains and now everything is aligned. please rereview