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src: implement structuredClone in native

Rodrigo Muino Tomonari requested to merge github/fork/joyeecheung/native-structured-clone into main

Simplify the implementation by implementing it directly in C++. This improves performance and also makes structuredClone supported in custom snapshots.

Local benchmark numbers:

                                                    confidence improvement accuracy (*)   (**)  (***)
misc/structured-clone.js n=10000 type='arraybuffer'        ***     12.79 %       ±1.72% ±2.29% ±2.99%
misc/structured-clone.js n=10000 type='object'             ***      7.65 %       ±2.22% ±2.96% ±3.85%
misc/structured-clone.js n=10000 type='string'             ***     75.01 %       ±3.84% ±5.14% ±6.75%

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