Mono repo -> Master (#22553)

Combines the following repositories into one:

https://github.com/mattermost/mattermost-server
https://github.com/mattermost/mattermost-webapp
https://github.com/mattermost/focalboard
https://github.com/mattermost/mattermost-plugin-playbooks

server/channels/einterfaces/saml.go

@@ -0,0 +1,17 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package einterfaces
+
+import (
+	"github.com/mattermost/mattermost-server/v6/model"
+	"github.com/mattermost/mattermost-server/v6/server/channels/app/request"
+)
+
+type SamlInterface interface {
+	ConfigureSP() error
+	BuildRequest(relayState string) (*model.SamlAuthRequest, *model.AppError)
+	DoLogin(c *request.Context, encodedXML string, relayState map[string]string) (*model.User, *model.AppError)
+	GetMetadata() (string, *model.AppError)
+	CheckProviderAttributes(SS *model.SamlSettings, ouser *model.User, patch *model.UserPatch) string
+}