fix: load auto-generated Swift import header correctly (#118)

This addresses #117, and gets the header to import correctly in modern versions of Xcode.

Co-authored-by: Elvira Burchik <[email protected]>

Author: fivecar

packages/react-native-performance/ios/ReactNativePerformance/ReactNativePerformance.m

@@ -1,5 +1,5 @@
 #import "ReactNativePerformance.h"
-#import "ReactNativePerformance-Swift.h"
+#import <ReactNativePerformance/ReactNativePerformance-Swift.h>
 
 static NSTimeInterval startupTimestamp = -1.0;