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/mmctl_e2e_test.go

@@ -0,0 +1,17 @@
+// 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/stretchr/testify/suite"
+)
+
+func TestMmctlE2ESuite(t *testing.T) {
+	suite.Run(t, new(MmctlE2ETestSuite))
+}