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/commandargs.go

@@ -0,0 +1,55 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package commands
+
+import (
+	"strings"
+
+	"github.com/mattermost/mattermost-server/server/v8/cmd/mmctl/client"
+
+	"github.com/mattermost/mattermost-server/server/public/model"
+)
+
+// getCommandFromCommandArg retrieves a Command by command id or team:trigger.
+func getCommandFromCommandArg(c client.Client, commandArg string) *model.Command {
+	if checkSlash(commandArg) {
+		return nil
+	}
+
+	cmd := getCommandFromTeamTrigger(c, commandArg)
+	if cmd == nil {
+		cmd, _, _ = c.GetCommandById(commandArg)
+	}
+	return cmd
+}
+
+// getCommandFromTeamTrigger retrieves a Command via team:trigger syntax.
+func getCommandFromTeamTrigger(c client.Client, teamTrigger string) *model.Command {
+	arr := strings.Split(teamTrigger, ":")
+	if len(arr) != 2 {
+		return nil
+	}
+
+	team, _, _ := c.GetTeamByName(arr[0], "")
+	if team == nil {
+		return nil
+	}
+
+	trigger := arr[1]
+	if trigger == "" {
+		return nil
+	}
+
+	list, _, _ := c.ListCommands(team.Id, false)
+	if list == nil {
+		return nil
+	}
+
+	for _, cmd := range list {
+		if cmd.Trigger == trigger {
+			return cmd
+		}
+	}
+	return nil
+}