feat: catch and print sign in crash when in debug mode (#1337)

ios/RNGoogleSignin.mm

@@ -124,13 +124,22 @@ + (BOOL)requiresMainQueueSetup
  reject:(RCTPromiseRejectBlock)reject)
 {
  dispatch_async(dispatch_get_main_queue(), ^{
- UIViewController* presentingViewController = RCTPresentedViewController();
  NSString* hint = options[@"loginHint"];
  NSArray* scopes = self.scopes;
 
- [GIDSignIn.sharedInstance signInWithPresentingViewController:presentingViewController hint:hint additionalScopes:scopes completion:^(GIDSignInResult * _Nullable signInResult, NSError * _Nullable error) {
- [self handleCompletion:signInResult withError:error withResolver:resolve withRejector:reject fromCallsite:@"signIn"];
+#if DEBUG
+ @try {
+#endif
+ [GIDSignIn.sharedInstance signInWithPresentingViewController:RCTPresentedViewController() hint:hint additionalScopes:scopes completion:^(GIDSignInResult * _Nullable signInResult, NSError * _Nullable error) {
+ [self handleCompletion:signInResult withError:error withResolver:resolve withRejector:reject fromCallsite:@"signIn"];
  }];
+#if DEBUG
+ }
+ @catch (NSException *exception) {
+ NSString *errorMessage = [NSString stringWithFormat:@"Encountered an error when signing in (see more below). If the error is 'Your app is missing support for the following URL schemes...', follow the troubleshooting guide at https://react-native-google-signin.github.io/docs/troubleshooting#ios\n\n%@", exception.description];
+ reject(@"SIGN_IN_ERROR", errorMessage, nil);
+ }
+#endif
  });
 }