Move some gob helpers to a new package.

Bug: 358427516
Test: CI
Change-Id: Ib25bbfb6e89c35cf4a080e2baaffadabf0e5636e
diff --git a/android/Android.bp b/android/Android.bp
index 87ac657..1ed2dba 100644
--- a/android/Android.bp
+++ b/android/Android.bp
@@ -9,6 +9,7 @@
         "blueprint",
         "blueprint-bootstrap",
         "blueprint-depset",
+        "blueprint-gobtools",
         "blueprint-metrics",
         "sbox_proto",
         "soong",