feat(config): add config parent command and path subcommand

cmd/config_cmd.go

@@ -0,0 +1,32 @@
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/spf13/cobra"
+)
+
+var configCmd = &cobra.Command{
+	Use:   "config",
+	Short: "View and modify configuration",
+}
+
+var configPathCmd = &cobra.Command{
+	Use:          "path",
+	Short:        "Print config file path",
+	Args:         cobra.NoArgs,
+	SilenceUsage: true,
+	RunE: func(cmd *cobra.Command, args []string) error {
+		p, err := configPath()
+		if err != nil {
+			return fmt.Errorf("cannot determine config path: %w", err)
+		}
+		fmt.Println(p)
+		return nil
+	},
+}
+
+func init() {
+	configCmd.AddCommand(configPathCmd)
+	rootCmd.AddCommand(configCmd)
+}