Refactor sandboxed sdk toolbox commands to separate file.

PiperOrigin-RevId: 563670847
Change-Id: I827a6a2b0836a2f0656a0d6e50752e825703d56d

rules/BUILD

diff --git a/rules/BUILD b/rules/BUILD
index 2f64843..467072b 100644
--- a/rules/BUILD
+++ b/rules/BUILD
@@ -43,6 +43,7 @@
         "proguard.bzl",
         "providers.bzl",
         "resources.bzl",
+        "sandboxed_sdk_toolbox.bzl",
         "utils.bzl",
     ],
     visibility = ["//:__subpackages__"],