[hal] Add handle constructor and name getters for sim devices (#4925)

wpilibc/src/main/native/include/frc/simulation/SimDeviceSim.h

@@ -42,6 +42,20 @@ class SimDeviceSim {
    */
   SimDeviceSim(const char* name, int index, int channel);
 
+  /**
+   * Constructs a SimDeviceSim.
+   *
+   * @param handle the low level handle for the corresponding SimDevice.
+   */
+  explicit SimDeviceSim(HAL_SimDeviceHandle handle);
+
+  /**
+   * Get the name of this object.
+   *
+   * @return name
+   */
+  std::string GetName() const;
+
   /**
    * Get the property object with the given name.
    *