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/aos/robot_state/robot_state_config.json b/aos/robot_state/robot_state_config.json
new file mode 100644
index 0000000..0b2a5cc
--- /dev/null
+++ b/aos/robot_state/robot_state_config.json
@@ -0,0 +1,15 @@
+{
+  "channels":
+  [
+    {
+      "name": "/aos",
+      "type": "aos.JoystickState",
+      "frequency": 75
+    },
+    {
+      "name": "/aos",
+      "type": "aos.RobotState",
+      "frequency": 200
+    }
+  ]
+}