capture arch in metadata table

man/build_binary_package.Rd

@@ -13,11 +13,14 @@ build_binary_package(
   local_build_root = "/root",
   local_clone_dir = "/tmp",
   platform = NULL,
+  arch = NULL,
   install_system_dependencies = TRUE,
   deps_verbose = FALSE,
   debug = FALSE,
   force = FALSE,
-  archive = TRUE
+  archive = TRUE,
+  future_strategy = "multisession",
+  future_workers = 2
 )
 }
 \description{