Add SAML support #7
Description
What problem does this address?
SAML is a popular authentication method - especially in the enterprise space. We should support it.
What is your proposed solution?
Create a new ProviderConfig that implements onelogin/php-saml.
What alternatives have you considered?
There are a few other SAML libraries for PHP, but onelogin's is by far the standard.
Additional Context
No response