Add wpilib-interface 2021 3rd robot climber

Change-Id: Ic5510c9a003d4cb6ca0a3013c19a84bc622aca45
Signed-off-by: Vinay Siva <100024232@mvla.net>
diff --git a/y2021_bot3/constants.h b/y2021_bot3/constants.h
index fd6ab72..f0cbacb 100644
--- a/y2021_bot3/constants.h
+++ b/y2021_bot3/constants.h
@@ -29,6 +29,9 @@
   }
   static constexpr double kRollerSupplyCurrentLimit() { return 30.0; }
   static constexpr double kRollerStatorCurrentLimit() { return 40.0; }
+
+  // Climber
+  static constexpr double kClimberSupplyCurrentLimit() { return 60.0; }
 };
 
 // Creates (once) a Values instance for ::aos::network::GetTeamNumber() and