put a caller of `-[UIView addSubview:]` to `-[UIView accessibilityIdentifier]`

UIView+debug.m

#ifdef DEBUG
#import <objc/runtime.h>
@interface UIView(swiz)

- (void)debug_addSubview:(UIView *)view;

@end

@implementation UIView(swiz)
+ (void)load {
    Method original, swizzled;
    
    original = class_getInstanceMethod(self, @selector(addSubview:));
    swizzled = class_getInstanceMethod(self, @selector(debug_addSubview:));
    method_exchangeImplementations(original, swizzled);
}

- (void)debug_addSubview:(UIView *)view {
    view.accessibilityIdentifier = [NSThread callStackSymbols][1];
    [self debug_addSubview:view];
}

@end
#endif