Move robot base classes from opmode to framework (#8344)

Having these in opmode will be confusing to users when opmodes are added.

wpilibc/src/main/native/include/wpi/framework/RobotState.hpp

@@ -0,0 +1,59 @@
+// 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
+
+namespace wpi {
+
+/**
+ * Robot state utility functions.
+ */
+class RobotState {
+ public:
+  RobotState() = delete;
+
+  /**
+   * Returns true if the robot is disabled.
+   *
+   * @return True if the robot is disabled.
+   */
+  static bool IsDisabled();
+
+  /**
+   * Returns true if the robot is enabled.
+   *
+   * @return True if the robot is enabled.
+   */
+  static bool IsEnabled();
+
+  /**
+   * Returns true if the robot is E-stopped.
+   *
+   * @return True if the robot is E-stopped.
+   */
+  static bool IsEStopped();
+
+  /**
+   * Returns true if the robot is in teleop mode.
+   *
+   * @return True if the robot is in teleop mode.
+   */
+  static bool IsTeleop();
+
+  /**
+   * Returns true if the robot is in autonomous mode.
+   *
+   * @return True if the robot is in autonomous mode.
+   */
+  static bool IsAutonomous();
+
+  /**
+   * Returns true if the robot is in test mode.
+   *
+   * @return True if the robot is in test mode.
+   */
+  static bool IsTest();
+};
+
+}  // namespace wpi