ios端google；修改ios打包时pod数据源为清华

Assets/Plugins/iOS/SignWithApple.h

@@ -1,4 +1,7 @@
-# import <AuthenticationServices/AuthenticationServices.h>
+#import <AuthenticationServices/AuthenticationServices.h>
+@import Firebase;
+@import GoogleSignIn;
+#import "UnityAppController.h"
 
 @interface AppleAuth: NSObject<ASAuthorizationControllerDelegate,ASAuthorizationProvider>
 - (void)authorizationAppleID;