Add flipper voltage to y2022 superstructure plot

Change-Id: I6e386f6ae6f2adc4b8938aaca77b83ed37802b88
Signed-off-by: James Kuszmaul <jabukuszmaul@gmail.com>
diff --git a/y2022/control_loops/superstructure/superstructure_plotter.ts b/y2022/control_loops/superstructure/superstructure_plotter.ts
index aae3d5a..f8c3a7c 100644
--- a/y2022/control_loops/superstructure/superstructure_plotter.ts
+++ b/y2022/control_loops/superstructure/superstructure_plotter.ts
@@ -78,4 +78,7 @@
   otherPlot.addMessageLine(position, ['flipper_arm_right', 'encoder'])
       .setColor(CYAN)
       .setPointSize(4.0);
+  otherPlot.addMessageLine(output, ['flipper_arms_voltage'])
+      .setColor(BROWN)
+      .setPointSize(4.0);
 }