Includes mmctl into the mono-repo (#23091)

* Includes mmctl into the mono-repo

* Update to use the new public module paths

* Adds docs check to the mmctl CI

* Fix public utils import path

* Tidy up modules

* Fix linter

* Update CI tasks to use the new file structure

* Update CI references

server/cmd/mmctl/commands/main_test.go

@@ -0,0 +1,27 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+//go:build e2e
+// +build e2e
+
+package commands
+
+import (
+	"testing"
+
+	"github.com/mattermost/mattermost-server/server/v8/channels/api4"
+	"github.com/mattermost/mattermost-server/server/v8/channels/testlib"
+)
+
+func TestMain(m *testing.M) {
+	var options = testlib.HelperOptions{
+		EnableStore:     true,
+		EnableResources: true,
+	}
+
+	mainHelper := testlib.NewMainHelperWithOptions(&options)
+	api4.SetMainHelper(mainHelper)
+	defer mainHelper.Close()
+
+	mainHelper.Main(m)
+}