Modernize invertergui: MQTT write support, HA integration, UI updates

vendor/github.com/jessevdk/go-flags/command.go

@@ -30,6 +30,12 @@ type Command struct {
 	// Whether positional arguments are required
 	ArgsRequired bool
 
+	// Whether to pass all arguments after the first non option as remaining
+	// command line arguments. This is equivalent to strict POSIX processing.
+	// This is command-local version of PassAfterNonOption Parser flag. It
+	// cannot be turned off when PassAfterNonOption Parser flag is set.
+	PassAfterNonOption bool
+
 	commands            []*Command
 	hasBuiltinHelpGroup bool
 	args                []*Arg
@@ -244,6 +250,7 @@ func (c *Command) scanSubcommandHandler(parentg *Group) scanHandler {
 			longDescription := mtag.Get("long-description")
 			subcommandsOptional := mtag.Get("subcommands-optional")
 			aliases := mtag.GetMany("alias")
+			passAfterNonOption := mtag.Get("pass-after-non-option")
 
 			subc, err := c.AddCommand(subcommand, shortDescription, longDescription, ptrval.Interface())
 
@@ -261,6 +268,10 @@ func (c *Command) scanSubcommandHandler(parentg *Group) scanHandler {
 				subc.Aliases = aliases
 			}
 
+			if len(passAfterNonOption) > 0 {
+				subc.PassAfterNonOption = true
+			}
+
 			return true, nil
 		}