Add shooter class and python.

Change-Id: I27b4c8f282a0b80344a7df59cf3b04569d9c8110
diff --git a/y2020/control_loops/superstructure/superstructure_output.fbs b/y2020/control_loops/superstructure/superstructure_output.fbs
index c14c08f..2583106 100644
--- a/y2020/control_loops/superstructure/superstructure_output.fbs
+++ b/y2020/control_loops/superstructure/superstructure_output.fbs
@@ -23,11 +23,11 @@
   washing_machine_spinner_voltage:double;
 
   // Voltage sent to the kicker. Positive is shooting.
-  kicker_left_voltage:double;
-  kicker_right_voltage:double;
+  accelerator_left_voltage:double;
+  accelerator_right_voltage:double;
 
   // Voltage sent to the flywheel. Positive is shooting.
-  flywheel_voltage:double;
+  finisher_voltage:double;
 
   // Voltage sent to the motor driving the control panel. Positive is counterclockwise from above.
   control_panel_voltage:double;