Add Transfer Roller Superstructure

Signed-off-by: Niko Sohmers <nikolai@sohmers.com>
Change-Id: I494a75aab2c206ef0e762e12937d09c32e53e7f7
diff --git a/y2024/control_loops/superstructure/superstructure.h b/y2024/control_loops/superstructure/superstructure.h
index 277ba73..67a8328 100644
--- a/y2024/control_loops/superstructure/superstructure.h
+++ b/y2024/control_loops/superstructure/superstructure.h
@@ -51,6 +51,7 @@
 
   aos::Alliance alliance_ = aos::Alliance::kInvalid;
 
+  TransferRollerGoal transfer_goal_;
   PotAndAbsoluteEncoderSubsystem intake_pivot_;
 
   DISALLOW_COPY_AND_ASSIGN(Superstructure);