Convert NetworkMonitor to obj-c

ZeroTier One/NetworkMonitor.h

@@ -0,0 +1,35 @@
+//
+//  NetworkMonitor.h
+//  ZeroTier One
+//
+//  Created by Grant Limberg on 8/7/16.
+//  Copyright © 2016 ZeroTier, Inc. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+extern NSString * const NetworkUpdateKey;
+extern NSString * const StatusUpdateKey;
+
+@class Network;
+
+@interface NetworkMonitor : NSObject
+{
+    NSMutableArray<Network*> *_savedNetworks;
+    NSArray<Network*> *_receivedNetworks;
+    NSMutableArray<Network*> *_allNetworks;
+
+    NSTimer *_timer;
+}
+
+- (id)init;
+- (void)dealloc;
+
+- (void)start;
+- (void)stop;
+
+- (void)updateNetworkInfo;
+
+- (void)deleteSavedNetwork:(NSString*)networkId;
+
+@end