[wpilib] Add Pneumatics sim classes (#4033)

wpilibc/src/main/native/include/frc/simulation/DoubleSolenoidSim.h

@@ -0,0 +1,33 @@
+// Copyright (c) FIRST and other WPILib contributors.
+// Open Source Software; you can modify and/or share it under the terms of
+// the WPILib BSD license file in the root directory of this project.
+
+#pragma once
+
+#include <memory>
+
+#include "frc/DoubleSolenoid.h"
+#include "frc/PneumaticsModuleType.h"
+#include "frc/simulation/PneumaticsBaseSim.h"
+
+namespace frc::sim {
+
+class DoubleSolenoidSim {
+ public:
+  DoubleSolenoidSim(std::shared_ptr<PneumaticsBaseSim> moduleSim, int fwd,
+                    int rev);
+  DoubleSolenoidSim(int module, PneumaticsModuleType type, int fwd, int rev);
+  DoubleSolenoidSim(PneumaticsModuleType type, int fwd, int rev);
+
+  DoubleSolenoid::Value Get() const;
+  void Set(DoubleSolenoid::Value output);
+
+  std::shared_ptr<PneumaticsBaseSim> GetModuleSim() const;
+
+ private:
+  std::shared_ptr<PneumaticsBaseSim> m_module;
+  int m_fwd;
+  int m_rev;
+};
+
+}  // namespace frc::sim