feat: config/users import/export (#613)

Supports json and yaml.

cmd/config_export.go

@@ -0,0 +1,30 @@
+package cmd
+
+import (
+	"github.com/spf13/cobra"
+)
+
+func init() {
+	configCmd.AddCommand(configExportCmd)
+}
+
+var configExportCmd = &cobra.Command{
+	Use:   "export <filename>",
+	Short: "Export the configuration to a file.",
+	Args:  jsonYamlArg,
+	Run: python(func(cmd *cobra.Command, args []string, d pythonData) {
+		settings, err := d.store.Settings.Get()
+		checkErr(err)
+
+		auther, err := d.store.Auth.Get(settings.AuthMethod)
+		checkErr(err)
+
+		data := &settingsFile{
+			Settings: settings,
+			Auther:   auther,
+		}
+
+		err = marshal(args[0], data)
+		checkErr(err)
+	}, pythonConfig{}),
+}