feat(odin): ported backup command.

main.odin

@@ -23,6 +23,8 @@ main :: proc() {
 		cmd_deps(&cmd)
 	case "list":
 		cmd_list(&cmd)
+	case "backup", "add":
+		cmd_backup(&cmd)
 	case:
 		fmt.printf("Unknown command: %s\n", cmd.name)
 		print_usage()