Move aos/input and aos/robot_state to frc971/input

Neither folder makes any sense as part of aos/.

Change-Id: I10e0532da4e688c18a9354012b783c43566fd2a1
diff --git a/y2020/actors/auto_splines.h b/y2020/actors/auto_splines.h
index 891228b..a80345c 100644
--- a/y2020/actors/auto_splines.h
+++ b/y2020/actors/auto_splines.h
@@ -3,9 +3,9 @@
 
 #include "aos/events/event_loop.h"
 #include "aos/flatbuffer_merge.h"
-#include "aos/robot_state/joystick_state_generated.h"
 #include "frc971/control_loops/control_loops_generated.h"
 #include "frc971/control_loops/drivetrain/drivetrain_goal_generated.h"
+#include "frc971/input/joystick_state_generated.h"
 /*
 
   The cooridinate system for the autonomous splines is the same as the spline