Add support for Apple Silicon

-Update classes to read correct Apple Silicon CPU sensor
-Update project to compile a Universal 2 binary. Upgraded Sparkle to 2.1.0 as that was the latest and supports ARM64.
-Add MacBookPro18,1 to Machines.plist

Sparkle.framework/Versions/B/Headers/SUVersionDisplayProtocol.h

@@ -0,0 +1,32 @@
+//
+//  SUVersionDisplayProtocol.h
+//  EyeTV
+//
+//  Created by Uli Kusterer on 08.12.09.
+//  Copyright 2009 Elgato Systems GmbH. All rights reserved.
+//
+
+#if __has_feature(modules)
+#if __has_warning("-Watimport-in-framework-header")
+#pragma clang diagnostic ignored "-Watimport-in-framework-header"
+#endif
+@import Foundation;
+#else
+#import <Foundation/Foundation.h>
+#endif
+#import <Sparkle/SUExport.h>
+
+/**
+    Applies special display formatting to version numbers.
+*/
+SU_EXPORT @protocol SUVersionDisplay
+
+/**
+    Formats two version strings.
+
+    Both versions are provided so that important distinguishing information
+    can be displayed while also leaving out unnecessary/confusing parts.
+*/
+- (void)formatVersion:(NSString *_Nonnull*_Nonnull)inOutVersionA andVersion:(NSString *_Nonnull*_Nonnull)inOutVersionB;
+
+@end