Move CameraServer and WPILib headers into their own folder

The old headers were moved into folders because doing so avoids polluting
the system include directories.

Folder names were also normalized to lowercase.

wpilibcExamples/src/main/cpp/examples/GearsBot/include/subsystems/Wrist.h

@@ -0,0 +1,55 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) 2017-2018 FIRST. All Rights Reserved.                        */
+/* Open Source Software - may be modified and shared by FRC teams. The code   */
+/* must be accompanied by the FIRST BSD license file in the root directory of */
+/* the project.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#pragma once
+
+#include <frc/AnalogPotentiometer.h>
+#include <frc/Spark.h>
+#include <frc/commands/PIDSubsystem.h>
+
+/**
+ * The wrist subsystem is like the elevator, but with a rotational joint instead
+ * of a linear joint.
+ */
+class Wrist : public frc::PIDSubsystem {
+ public:
+  Wrist();
+
+  void InitDefaultCommand() override;
+
+  /**
+   * The log method puts interesting information to the SmartDashboard.
+   */
+  void Log();
+
+  /**
+   * Use the potentiometer as the PID sensor. This method is automatically
+   * called by the subsystem.
+   */
+  double ReturnPIDInput() override;
+
+  /**
+   * Use the motor as the PID output. This method is automatically called
+   * by
+   * the subsystem.
+   */
+  void UsePIDOutput(double d) override;
+
+ private:
+  frc::Spark m_motor{6};
+
+// Conversion value of potentiometer varies between the real world and
+// simulation
+#ifndef SIMULATION
+  frc::AnalogPotentiometer m_pot{3, -270.0 / 5};
+#else
+  frc::AnalogPotentiometer m_pot{3};  // Defaults to degrees
+#endif
+
+  static constexpr double kP_real = 1;
+  static constexpr double kP_simulation = 0.05;
+};