chore: Add command desc & color commands (#2013)

* Add link & Color sub-commands

* Color sub-commands for unix-like OS

* Remove useless code

* Remove redundant dependency

tools/goctl/cmd/usage.tpl

@@ -0,0 +1,23 @@
+{{blue "Usage:"}}{{if .Runnable}}
+  {{green .UseLine}}{{end}}{{if .HasAvailableSubCommands}}
+  {{green .CommandPath}} [command]{{end}}{{if gt (len .Aliases) 0}}
+
+{{blue "Aliases:"}}
+  {{green .NameAndAliases}}{{end}}{{if .HasExample}}
+
+{{blue "Examples:"}}
+{{.Example}}{{end}}{{if .HasAvailableSubCommands}}
+
+{{blue "Available Commands:"}}{{range .Commands}}{{if (or .IsAvailableCommand (eq .Name "help"))}}
+  {{rpadx .Name .NamePadding}} {{.Short}}{{end}}{{end}}{{end}}{{if .HasAvailableLocalFlags}}
+
+{{blue "Flags:"}}
+{{green .LocalFlags.FlagUsages | trimTrailingWhitespaces}}{{end}}{{if .HasAvailableInheritedFlags}}
+
+{{blue "Global Flags:"}}
+{{green .InheritedFlags.FlagUsages | trimTrailingWhitespaces}}{{end}}{{if .HasHelpSubCommands}}
+
+{{blue "Additional help topics:"}}{{range .Commands}}{{if .IsAdditionalHelpTopicCommand}}
+  {{rpad .CommandPath .CommandPathPadding}} {{.Short}}{{end}}{{end}}{{end}}{{if .HasAvailableSubCommands}}
+
+Use "{{green .CommandPath}} [command] --help" for more information about a command.{{end}}