Finally add auto mode.

It is pretty basic now, it just drives forward and puts a ball
in the low goal. This did involve copying over some of the
action stuff, though, and I fixed a couple silly issues in
the frc971 versions while I was at it.

Change-Id: Idc18ea63dd74ba8ba5405264f212ebe993084aa9
diff --git a/frc971/actions/catch_action.cc b/frc971/actions/catch_action.cc
index 350b6f6..7b67645 100644
--- a/frc971/actions/catch_action.cc
+++ b/frc971/actions/catch_action.cc
@@ -1,3 +1,4 @@
+#include <complex>
 #include <functional>
 
 #include "aos/common/logging/logging.h"