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/app/platform/enterprise.go

@@ -0,0 +1,33 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package platform
+
+import (
+	"github.com/mattermost/mattermost-server/v6/server/channels/einterfaces"
+	"github.com/mattermost/mattermost-server/v6/server/platform/services/searchengine"
+)
+
+var clusterInterface func(*PlatformService) einterfaces.ClusterInterface
+
+func RegisterClusterInterface(f func(*PlatformService) einterfaces.ClusterInterface) {
+	clusterInterface = f
+}
+
+var elasticsearchInterface func(*PlatformService) searchengine.SearchEngineInterface
+
+func RegisterElasticsearchInterface(f func(*PlatformService) searchengine.SearchEngineInterface) {
+	elasticsearchInterface = f
+}
+
+var licenseInterface func(*PlatformService) einterfaces.LicenseInterface
+
+func RegisterLicenseInterface(f func(*PlatformService) einterfaces.LicenseInterface) {
+	licenseInterface = f
+}
+
+var metricsInterfaceFn func(*PlatformService, string, string) einterfaces.MetricsInterface
+
+func RegisterMetricsInterface(f func(*PlatformService, string, string) einterfaces.MetricsInterface) {
+	metricsInterfaceFn = f
+}