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/utils_unix.go

@@ -0,0 +1,80 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+//go:build linux || darwin
+// +build linux darwin
+
+package commands
+
+import (
+	"fmt"
+	"os"
+	"os/user"
+	"syscall"
+
+	"github.com/isacikgoz/prompt"
+	"github.com/pkg/errors"
+)
+
+func checkValidSocket(socketPath string) error {
+	// check file mode and permissions
+	fi, err := os.Stat(socketPath)
+	if err != nil && os.IsNotExist(err) {
+		return fmt.Errorf("socket file %q doesn't exists, please check the server configuration for local mode", socketPath)
+	} else if err != nil {
+		return err
+	}
+	if fi.Mode() != expectedSocketMode {
+		return fmt.Errorf("invalid file mode for file %q, it must be a socket with 0600 permissions", socketPath)
+	}
+
+	// check matching user
+	cUser, err := user.Current()
+	if err != nil {
+		return err
+	}
+	s, ok := fi.Sys().(*syscall.Stat_t)
+	if !ok {
+		return fmt.Errorf("cannot get owner of the file %q", socketPath)
+	}
+	// if user id is "0", they are root and we should avoid this check
+	if fmt.Sprint(s.Uid) != cUser.Uid && cUser.Uid != "0" {
+		return fmt.Errorf("owner of the file %q must be the same user running mmctl", socketPath)
+	}
+
+	return nil
+}
+
+func getConfirmation(question string, dbConfirmation bool) error {
+	if err := checkInteractiveTerminal(); err != nil {
+		return fmt.Errorf("could not proceed, either enable --confirm flag or use an interactive shell to complete operation: %w", err)
+	}
+
+	if dbConfirmation {
+		s, err := prompt.NewSelection("Have you performed a database backup?", []string{"no", "yes"}, "", 2)
+		if err != nil {
+			return fmt.Errorf("could not initiate prompt: %w", err)
+		}
+		ans, err := s.Run()
+		if err != nil {
+			return fmt.Errorf("error running prompt: %w", err)
+		}
+		if ans != "yes" {
+			return errors.New("aborted")
+		}
+	}
+
+	s, err := prompt.NewSelection(question, []string{"no", "yes"}, "WARNING: This operation is not reversible.", 2)
+	if err != nil {
+		return fmt.Errorf("could not initiate prompt: %w", err)
+	}
+	ans, err := s.Run()
+	if err != nil {
+		return fmt.Errorf("error running prompt: %w", err)
+	}
+	if ans != "yes" {
+		return errors.New("aborted")
+	}
+
+	return nil
+}