[fuchsia] Add a group for all the packages

This group will be used by the infra to include all the packages in a
test image.

Change-Id: Ie461889b0ade7202e0c070abb0bdedc150ef8eab
diff --git a/fuchsia/BUILD.gn b/fuchsia/BUILD.gn
index ce3cce8..db309d6 100644
--- a/fuchsia/BUILD.gn
+++ b/fuchsia/BUILD.gn
@@ -163,3 +163,13 @@
     },
   ]
 }
+
+group("fuchsia") {
+  testonly = true
+  public_deps = [
+    ":vulkan-cts",
+    ":vulkan-cts-execserver",
+    ":vulkan-cts-executor",
+    "//garnet/packages/prod:vulkan",
+  ]
+}