Add ModuleProxy that should be used when visiting deps.

Bug: 358427516
Test: local manual tests to compare the generated mk and ninja files.
Change-Id: I2bbe2e679e404a46947f3895943dad749be38446
diff --git a/android/Android.bp b/android/Android.bp
index c2bef0b..eb8c64d 100644
--- a/android/Android.bp
+++ b/android/Android.bp
@@ -71,6 +71,7 @@
         "module.go",
         "module_context.go",
         "module_info_json.go",
+        "module_proxy.go",
         "mutator.go",
         "namespace.go",
         "neverallow.go",