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

Classes/FanControl.m

@@ -29,6 +29,7 @@
 #import <Security/AuthorizationTags.h>
 #import <Sparkle/SUUpdater.h>
 #import "SystemVersion.h"
+#include "TargetConditionals.h"
 
 @interface FanControl ()
 + (void)copyMachinesIfNecessary;
@@ -150,7 +151,11 @@ NSUserDefaults *defaults;
 			@0, PREF_AC_SELECTION,
 			@0, PREF_CHARGING_SELECTION,
 			@0, PREF_MENU_DISPLAYMODE,
+#if TARGET_CPU_ARM64
+            @"Tp0D",PREF_TEMPERATURE_SENSOR,
+#else
             @"TC0D",PREF_TEMPERATURE_SENSOR,
+#endif
             @0, PREF_NUMBEROF_LAUNCHES,
             @NO,PREF_DONATIONMESSAGE_DISPLAY,
 			[NSArchiver archivedDataWithRootObject:[NSColor blackColor]],PREF_MENU_TEXTCOLOR,

Classes/smcWrapper.m

@@ -22,6 +22,7 @@
  */
 
 #import "smcWrapper.h"
+#include "TargetConditionals.h"
 #import <CommonCrypto/CommonDigest.h>
 NSString * const smc_checksum=@"4fc00a0979970ee8b55f078a0c793c4d";
 
@@ -70,7 +71,11 @@ NSArray *allSensors;
     NSString *sensor = [[NSUserDefaults standardUserDefaults] objectForKey:PREF_TEMPERATURE_SENSOR];
     SMCReadKey2((char*)[sensor UTF8String], &val,conn);
     retValue = [self convertToNumber:val];
+#if TARGET_CPU_ARM64
+    allSensors = [NSArray arrayWithObjects:@"Tp0D",@"Tp0P",nil];
+#else
     allSensors = [NSArray arrayWithObjects:@"TC0D",@"TC0P",@"TCAD",@"TC0H",@"TC0F",@"TCAH",@"TCBH",nil];
+#endif
     if (retValue<=0 || floor(retValue) == 129 ) { //workaround for some iMac Models
         for (NSString *sensor in allSensors) {
             SMCReadKey2((char*)[sensor UTF8String], &val,conn);