[hal] Rename PowerDistributionPanel to PowerDistribution (#3466)

Makes HAL more generic for the PDP, to enable the Rev PDH in the future.

hal/src/main/native/sim/mockdata/PowerDistributionDataInternal.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 "../PortsInternal.h"
+#include "hal/simulation/PowerDistributionData.h"
+#include "hal/simulation/SimDataValue.h"
+
+namespace hal {
+class PowerDistributionData {
+  HAL_SIMDATAVALUE_DEFINE_NAME(Initialized)
+  HAL_SIMDATAVALUE_DEFINE_NAME(Temperature)
+  HAL_SIMDATAVALUE_DEFINE_NAME(Voltage)
+  HAL_SIMDATAVALUE_DEFINE_NAME(Current)
+
+  static LLVM_ATTRIBUTE_ALWAYS_INLINE constexpr double GetCurrentDefault() {
+    return 0.0;
+  }
+
+ public:
+  SimDataValue<HAL_Bool, HAL_MakeBoolean, GetInitializedName> initialized{
+      false};
+  SimDataValue<double, HAL_MakeDouble, GetTemperatureName> temperature{0.0};
+  SimDataValue<double, HAL_MakeDouble, GetVoltageName> voltage{12.0};
+  SimDataValue<double, HAL_MakeDouble, GetCurrentName, GetCurrentDefault>
+      current[kNumPDPChannels];
+
+  virtual void ResetData();
+};
+extern PowerDistributionData* SimPowerDistributionData;
+}  // namespace hal