Add ids to flatbuffer fields in y2012, y2016, frc971, and aos

Change-Id: I9ed9006ce6224e2df0459df47771786b928164a1
diff --git a/frc971/codelab/basic_status.fbs b/frc971/codelab/basic_status.fbs
index ec754b4..0aa2938 100644
--- a/frc971/codelab/basic_status.fbs
+++ b/frc971/codelab/basic_status.fbs
@@ -5,7 +5,7 @@
   // be set to true by the intake subsystem when the Goal message is requesting
   // the intake to be on and the limit sensor from the position message has
   // been enabled.
-  intake_complete:bool;
+  intake_complete:bool (id: 0);
 }
 
 root_type Status;