Added intake and joint to superstructure and tests.

Change-Id: Ibdf15b6bade03c1bd21113490c5c4d12e7edadf9
diff --git a/y2020/control_loops/superstructure/superstructure.h b/y2020/control_loops/superstructure/superstructure.h
index dbc1ccd..680b447 100644
--- a/y2020/control_loops/superstructure/superstructure.h
+++ b/y2020/control_loops/superstructure/superstructure.h
@@ -25,6 +25,7 @@
           ::frc971::control_loops::AbsoluteEncoderProfiledJointStatus>;
 
   const AbsoluteEncoderSubsystem &hood() const { return hood_; }
+  const AbsoluteEncoderSubsystem &intake_joint() const { return intake_joint_; }
 
  protected:
   virtual void RunIteration(const Goal *unsafe_goal, const Position *position,
@@ -33,6 +34,7 @@
 
  private:
   AbsoluteEncoderSubsystem hood_;
+  AbsoluteEncoderSubsystem intake_joint_;
 
   DISALLOW_COPY_AND_ASSIGN(Superstructure);
 };