Fix issues with json files

File parsing no longer uses istream, which strips whitespace. Moved hard-coded json to its own file.

Signed-off-by: Alexander Yee <xander.yee@gmail.com>
Change-Id: I342b74fd1cc8c5af7721af5955aa7d7b185ac71e
diff --git a/aos/BUILD b/aos/BUILD
index b8468bd..0792e67 100644
--- a/aos/BUILD
+++ b/aos/BUILD
@@ -411,9 +411,11 @@
     ],
     data = [
         ":json_to_flatbuffer_fbs_reflection_out",
+        ":json_to_flatbuffer_test_spaces.json",
     ],
     target_compatible_with = ["@platforms//os:linux"],
     deps = [
+        ":flatbuffer_merge",
         ":json_to_flatbuffer",
         ":json_to_flatbuffer_fbs",
         "//aos/testing:googletest",