* use oidc-client-ts during oidc discovery
* export new type for auth config
* deprecate generateAuthorizationUrl in favour of generateOidcAuthorizationUrl
* testing util for oidc configurations
* test generateOidcAuthorizationUrl
* lint
* test discovery
* dont pass whole client wellknown to oidc validation funcs
* add nonce
* use oidc-client-ts for oidc response
* validate user state and update tests
* use oidc-client-ts for code exchange
* use oidc-client-ts in completing auth grant
* use client userState for homeserver
* more comments
* use oidc-client-ts during oidc discovery
* export new type for auth config
* deprecate generateAuthorizationUrl in favour of generateOidcAuthorizationUrl
* testing util for oidc configurations
* test generateOidcAuthorizationUrl
* lint
* test discovery
* dont pass whole client wellknown to oidc validation funcs
* add nonce
* use client userState for homeserver
* validate m.authentication, fetch issuer wellknown
* move validation functions into separate file
* test validateWellKnownAuthentication
* test validateOIDCIssuerWellKnown
* add authentication cases to autodiscovery tests
* test invalid authentication config on wk
* improve types
* test case for account:false
* use hasOwnProperty in validateWellKnownAuthentication
* comments
* make registration_endpoint optional
