Create AOS MCAP logger for testing Foxglove

Doesn't add indexing yet, so still limited in size.

https://github.com/foxglove/studio/issues/2909 tracks support for
flatbuffers in foxglove studio

References: PRO-13587
Change-Id: I7c8c15c765395ade979eb8a011cfdae65451b526
Signed-off-by: James Kuszmaul <james.kuszmaul@bluerivertech.com>
diff --git a/aos/BUILD b/aos/BUILD
index 025e78c..aaf0ec0 100644
--- a/aos/BUILD
+++ b/aos/BUILD
@@ -265,6 +265,7 @@
     srcs = ["flatbuffer_utils.cc"],
     hdrs = ["flatbuffer_utils.h"],
     target_compatible_with = ["@platforms//os:linux"],
+    visibility = ["//visibility:public"],
     deps = [
         "@com_github_google_flatbuffers//:flatbuffers",
         "@com_github_google_glog//:glog",
@@ -514,6 +515,7 @@
         "fast_string_builder.h",
     ],
     target_compatible_with = ["@platforms//os:linux"],
+    visibility = ["//visibility:public"],
     deps = [
         "@com_github_google_glog//:glog",
         "@com_google_absl//absl/strings",