AK: Add cast using objective-c __bridge qualifier

Author: https://github.com/ADKaster
Commit: https://github.com/LadybirdBrowser/ladybird/commit/be84ff4f2c7
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/3963
Reviewed-by: https://github.com/alimpfard
Reviewed-by: https://github.com/bugaevc

AK/TypeCasts.h

@@ -73,10 +73,21 @@ ALWAYS_INLINE CopyConst<InputType, OutputType>* as(InputType* input)
     return result;
 }
 
+template<typename OutputType, typename InputType>
+ALWAYS_INLINE CopyConst<InputType, OutputType>* bridge_cast(InputType input)
+{
+#ifdef AK_HAS_OBJC_ARC
+    return (__bridge CopyConst<InputType, OutputType>*)(input);
+#else
+    return static_cast<CopyConst<InputType, OutputType>*>(input);
+#endif
+}
+
 }
 
 #if USING_AK_GLOBALLY
 using AK::as;
 using AK::as_if;
+using AK::bridge_cast;
 using AK::is;
 #endif