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

model/oauthproviders/gitlab/gitlab.go

@@ -10,8 +10,8 @@ import (
 	"strconv"
 	"strings"
 
-	"github.com/mattermost/mattermost-server/v6/einterfaces"
 	"github.com/mattermost/mattermost-server/v6/model"
+	"github.com/mattermost/mattermost-server/v6/server/channels/einterfaces"
 )
 
 type GitLabProvider struct {