options: Add kong.ShortUsageOnError() option

Add kong.ShortUsageOnError() option similar to kong.UsageOnError().
Add tests for UsageOnError and ShortUsageOnError.

Remove the HelpOption summary reset at the beginning of DefaultHelpPrinter:

	 func DefaultHelpPrinter(options HelpOptions, ctx *Context) error {
	-       if ctx.Empty() {
	-               options.Summary = false
	-       }

⚠️ I'm not really sure what the implications of this are, tests still
seem to pass, but maybe this has unintended side effects.

help.go

@@ -87,6 +87,21 @@ func DefaultHelpValueFormatter(value *Value) string {
 	}
 }
 
+// DefaultShortHelpPrinter is the default HelpPrinter for short help on error.
+func DefaultShortHelpPrinter(options HelpOptions, ctx *Context) error {
+	w := newHelpWriter(ctx, options)
+	cmd := ctx.Selected()
+	app := ctx.Model
+	if cmd == nil {
+		w.Printf("Usage: %s%s", app.Name, app.Summary())
+		w.Printf(`Run "%s --help" for more information.`, app.Name)
+	} else {
+		w.Printf("Usage: %s %s", app.Name, cmd.Summary())
+		w.Printf(`Run "%s --help" for more information.`, cmd.FullPath())
+	}
+	return w.Write(ctx.Stdout)
+}
+
 // DefaultHelpPrinter is the default HelpPrinter.
 func DefaultHelpPrinter(options HelpOptions, ctx *Context) error {
 	if ctx.Empty() {