[wpilibc] Add missing move constructors and assignment operators (#2959)

- Field2d
- FieldObject2d
- AnalogGyro

wpilibc/src/main/native/include/frc/AnalogGyro.h

@@ -104,8 +104,8 @@ class AnalogGyro : public GyroBase {
 
   ~AnalogGyro() override;
 
-  AnalogGyro(AnalogGyro&& rhs);
-  AnalogGyro& operator=(AnalogGyro&& rhs);
+  AnalogGyro(AnalogGyro&& rhs) = default;
+  AnalogGyro& operator=(AnalogGyro&& rhs) = default;
 
   /**
    * Return the actual angle in degrees that the robot is currently facing.

wpilibc/src/main/native/include/frc/smartdashboard/Field2d.h

@@ -47,6 +47,9 @@ class Field2d : public Sendable {
 
   Field2d();
 
+  Field2d(Field2d&& rhs);
+  Field2d& operator=(Field2d&& rhs);
+
   /**
    * Set the robot pose from a Pose object.
    *

wpilibc/src/main/native/include/frc/smartdashboard/FieldObject2d.h

@@ -36,6 +36,9 @@ class FieldObject2d {
   FieldObject2d(std::string&& name, const private_init&)
       : m_name{std::move(name)} {}
 
+  FieldObject2d(FieldObject2d&& rhs);
+  FieldObject2d& operator=(FieldObject2d&& rhs);
+
   /**
    * Set the pose from a Pose object.
    *