Port for macOS (#311)

* merged moonlight-mac with moonlight-ios

* reverted to the original project.pbxproj

* cleaned up the code, fixed lots of unnecessary code duplications

* multicontroller support (not tested)

* new class that can be used for further modularization of the MainFrameViewController

Moonlight macOS/ViewController/StreamFrameViewController.h

@@ -0,0 +1,26 @@
+//
+//  StreamFrameViewController.h
+//  Moonlight macOS
+//
+//  Created by Felix Kratz on 09.03.18.
+//  Copyright © 2018 Felix Kratz. All rights reserved.
+//
+
+#import <Cocoa/Cocoa.h>
+#import "Connection.h"
+#import "StreamConfiguration.h"
+#import "StreamView.h"
+#import "ViewController.h"
+
+@interface StreamFrameViewController : NSViewController <ConnectionCallbacks>
+
+- (ViewController*) _origin;
+
+- (void)setOrigin: (ViewController*) viewController;
+
+@property (nonatomic) StreamConfiguration* streamConfig;
+@property (strong) IBOutlet StreamView *streamView;
+@property (weak) IBOutlet NSProgressIndicator *progressIndicator;
+@property (weak) IBOutlet NSTextField *stageLabel;
+
+@end