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

hal/src/main/java/edu/wpi/first/hal/SimDevice.java

@@ -106,6 +106,15 @@ public class SimDevice implements AutoCloseable {
     return m_handle;
   }
 
+  /**
+   * Get the name of the simulated device.
+   *
+   * @return the name
+   */
+  public String getName() {
+    return SimDeviceJNI.getSimDeviceName(m_handle);
+  }
+
   /**
    * Creates a value on the simulated device.
    *

hal/src/main/java/edu/wpi/first/hal/SimDeviceJNI.java

@@ -33,6 +33,14 @@ public class SimDeviceJNI extends JNIWrapper {
    */
   public static native void freeSimDevice(int handle);
 
+  /**
+   * Get the name of a simulated device.
+   *
+   * @param handle simulated device handle
+   * @return name of the simulated device
+   */
+  public static native String getSimDeviceName(int handle);
+
   private static native int createSimValueNative(
       int device, String name, int direction, int type, long value1, double value2);