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/api4/group_local.go

@@ -0,0 +1,41 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package api4
+
+import (
+	"net/http"
+)
+
+func (api *API) InitGroupLocal() {
+	api.BaseRoutes.Channels.Handle("/{channel_id:[A-Za-z0-9]+}/groups", api.APILocal(getGroupsByChannelLocal)).Methods("GET")
+	api.BaseRoutes.Teams.Handle("/{team_id:[A-Za-z0-9]+}/groups", api.APILocal(getGroupsByTeamLocal)).Methods("GET")
+}
+
+func getGroupsByChannelLocal(c *Context, w http.ResponseWriter, r *http.Request) {
+	c.RequireChannelId()
+	if c.Err != nil {
+		return
+	}
+	b, appErr := getGroupsByChannelCommon(c, r)
+	if appErr != nil {
+		c.Err = appErr
+		return
+	}
+
+	w.Write(b)
+}
+
+func getGroupsByTeamLocal(c *Context, w http.ResponseWriter, r *http.Request) {
+	c.RequireTeamId()
+	if c.Err != nil {
+		return
+	}
+	b, appError := getGroupsByTeamCommon(c, r)
+	if appError != nil {
+		c.Err = appError
+		return
+	}
+
+	w.Write(b)
+}