refactor to decouple commands form entrypoint for reusability and centralizing commands.

Increase reusability and composition

internal/commands/survey/start.go

@@ -0,0 +1,9 @@
+package surveyCmd
+
+import "github.com/spf13/cobra"
+
+// StartCmd is the start command - RunE is set in cmd/survey/
+var StartCmd = &cobra.Command{
+	Use:   "start",
+	Short: "Start the user survey",
+}