feat: add gen model

cmd/gen.go

@@ -0,0 +1,21 @@
+package cmd
+
+import "github.com/spf13/cobra"
+
+func CommandGen(root *cobra.Command) {
+	cmd := &cobra.Command{
+		Use:   "gen",
+		Short: "Generate code",
+	}
+	cmd.PersistentFlags().StringP("config", "c", "config.toml", "database config file")
+
+	cmds := []func(*cobra.Command){
+		CommandGenModel,
+	}
+
+	for _, c := range cmds {
+		c(cmd)
+	}
+
+	root.AddCommand(cmd)
+}