commands: Make the list commands non-global

See #4598

commands/genchromastyles.go

@@ -22,6 +22,10 @@ import (
 	"github.com/spf13/cobra"
 )
 
+var (
+	_ cmder = (*genChromaStyles)(nil)
+)
+
 type genChromaStyles struct {
 	style          string
 	highlightStyle string
@@ -29,6 +33,10 @@ type genChromaStyles struct {
 	cmd            *cobra.Command
 }
 
+func (c *genChromaStyles) getCommand() *cobra.Command {
+	return c.cmd
+}
+
 // TODO(bep) highlight
 func createGenChromaStyles() *genChromaStyles {
 	g := &genChromaStyles{