Fixed a compilation error on Xcode 16 Beta with tvOS 18.

[fbernardo]

Description

This PR fixes a compilation error in Xcode 16 Beta compiling against the tvOS 18 SDK:

/mamba/mambaSharedFramework/Rapid Parser/RapidParserNewTagCallbacks.h:25:53: Missing '#include <_types/_uint64_t.h>'; 'uint64_t' must be declared before it is used

Change Notes

• Added the necessary <stdint.h> import where it is used.

Pre-submission Checklist

• I ran the unit tests locally before checking in.
• I made sure there were no compiler warnings before checking in.
• I have written useful documentation for all public code.
• I have written unit tests for this new feature.

[CLAassistant]

All committers have signed the CLA.

[MKW11]

Hey Guys! Is it possible to merge and release this? We could very much use it at Sky and NBC for some testing. As there is no SPM file on this repository, we can only import it via official release.
If you prefer this import be conditional, as the XCode 16 has not been released yet, please let me recommend the following:

#if __clang_major__ >= 16
    #include <stdint.h>
#endif

Thank you for your kind consideration.