[wpilib] Add Field widget to BuiltInWidgets in shuffleboard (#3961)

wpilibc/src/main/native/cpp/shuffleboard/ShuffleboardWidget.cpp

@@ -31,6 +31,7 @@ static constexpr const char* widgetStrings[] = {
     "Differential Drivebase",
     "Mecanum Drivebase",
     "Camera Stream",
+    "Field",
 };
 
 const char* detail::GetStringForWidgetType(BuiltInWidgets type) {

wpilibc/src/main/native/include/frc/shuffleboard/BuiltInWidgets.h

@@ -370,7 +370,16 @@ enum class BuiltInWidgets {
    * </td></tr>
    * </table>
    */
-  kCameraStream
+  kCameraStream,
+  /**
+   * Displays a field2d object.<br>
+   * Supported types:
+   *
+   * <ul>
+   *   <li>Field2d
+   * </ul>
+   */
+  kField,
 };
 
 }  // namespace frc

wpilibj/src/main/java/edu/wpi/first/wpilibj/shuffleboard/BuiltInWidgets.java

@@ -473,6 +473,15 @@ public enum BuiltInWidgets implements WidgetType {
    * </table>
    */
   kCameraStream("Camera Stream"),
+  /**
+   * Displays a field2d object.<br>
+   * Supported types:
+   *
+   * <ul>
+   *   <li>{@link edu.wpi.first.wpilibj.smartdashboard.Field2d}
+   * </ul>
+   */
+  kField("Field"),
   ;
 
   private final String m_widgetName;