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/utils/i18n.go

@@ -0,0 +1,29 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package utils
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"github.com/mattermost/mattermost-server/v6/server/channels/utils/fileutils"
+	"github.com/mattermost/mattermost-server/v6/server/platform/shared/i18n"
+)
+
+// this functions loads translations from filesystem if they are not
+// loaded already and assigns english while loading server config
+func TranslationsPreInit() error {
+	translationsDir := "i18n"
+	if mattermostPath := os.Getenv("MM_SERVER_PATH"); mattermostPath != "" {
+		translationsDir = filepath.Join(mattermostPath, "i18n")
+	}
+
+	i18nDirectory, found := fileutils.FindDirRelBinary(translationsDir)
+	if !found {
+		return fmt.Errorf("unable to find i18n directory at %q", translationsDir)
+	}
+
+	return i18n.TranslationsPreInit(i18nDirectory)
+}