Enable bzl visibility for Protobuf Rust rules

PiperOrigin-RevId: 520319698

rust/aspects.bzl

@@ -13,6 +13,8 @@ load("@upb//bazel:upb_proto_library.bzl", "UpbWrappedCcInfo", "upb_proto_library
 
 proto_common = proto_common_do_not_use
 
+visibility(["//rust/..."])
+
 RustProtoInfo = provider(
     doc = "Rust protobuf provider info",
     fields = {

rust/defs.bzl

@@ -11,6 +11,8 @@ load(
     "rust_upb_proto_library_aspect",
 )
 
+visibility(["//rust/..."])
+
 def rust_proto_library(name, deps, **args):
     """Declares all the boilerplate needed to use Rust protobufs conveniently.