Convert aos over to flatbuffers

Everything builds, and all the tests pass.  I suspect that some entries
are missing from the config files, but those will be found pretty
quickly on startup.

There is no logging or live introspection of queue messages.

Change-Id: I496ee01ed68f202c7851bed7e8786cee30df29f5
diff --git a/y2019/status_light.fbs b/y2019/status_light.fbs
new file mode 100644
index 0000000..633b030
--- /dev/null
+++ b/y2019/status_light.fbs
@@ -0,0 +1,15 @@
+namespace y2019;
+
+table StatusLight {
+  // How bright to make each one. 0 is off, 1 is full on.
+  red:float;
+  green:float;
+  blue:float;
+}
+
+table CameraLog {
+  log:bool;
+}
+
+root_type CameraLog;
+root_type StatusLight;