fix: use of generic oauth provider (#5345)

Adds a id_attribute to the GenericOAuthProvider, which is used to map the external User. Further mapping can be done in actions by using the `rawInfo` of the new `ctx.v1.providerInfo` field.

internal/repository/instance/idp.go

@@ -36,7 +36,8 @@ func NewOAuthIDPAddedEvent(
 	clientSecret *crypto.CryptoValue,
 	authorizationEndpoint,
 	tokenEndpoint,
-	userEndpoint string,
+	userEndpoint,
+	idAttribute string,
 	scopes []string,
 	options idp.Options,
 ) *OAuthIDPAddedEvent {
@@ -55,6 +56,7 @@ func NewOAuthIDPAddedEvent(
 			authorizationEndpoint,
 			tokenEndpoint,
 			userEndpoint,
+			idAttribute,
 			scopes,
 			options,
 		),