Add Bazel support for queue files.

Change-Id: I69921edb654765364bc1333b16fd4583446fd88c
diff --git a/build_tests/queue.cc b/build_tests/queue.cc
new file mode 100644
index 0000000..3be667e
--- /dev/null
+++ b/build_tests/queue.cc
@@ -0,0 +1,7 @@
+#include "build_tests/queue.q.h"
+
+int main() {
+  ::build_tests::TestStruct s;
+  s.field = 971;
+  return (s.field == 971) ? 0 : 1;
+}