Function benchmark_microseconds

tests/profile/benchmark_json_parsers.cpp:23–34

// Benchmark helper
template<typename Func>
double benchmark_microseconds(Func&& func, int iterations) {
    // Warmup
    func();

    u32 start = fl::micros();
    for (int i = 0; i < iterations; i++) {
        func();
    }
    u32 end = fl::micros();

    return static_cast<double>(end - start) / iterations;
}

void run_benchmark(const char* test_name, const fl::string& json_data, int iterations, bool& success) {
    printf("\n");