Mach-O Object Support

[HaydnTrigg]

Enable support for loading Mach-O objects

[LagoLunatic]

Could you add a small test object and snapshot test?

[HaydnTrigg]

Sure thing I'll put that together asap

[HaydnTrigg]

Rebased the changes to make sure everything is up to date and I have added tests for arm64 armv6 armv7 i386 x86_x64 compiled using LLVM-18.1.8 using the following code:

extern "C" int printf(const char* format, ...);

__attribute__((noinline)) unsigned long long fibonacci(unsigned n) {
    unsigned long long a = 0, b = 1;
    for (unsigned i = 0; i < n; ++i) {
        unsigned long long next = a + b;
        a = b;
        b = next;
    }
    return a;
}

int main() {
    printf("Hello, world!\n");
    for (unsigned i = 0; i < 16; ++i) {
        printf("fib(%u) = %llu\n", i, fibonacci(i));
    }
    return 0;
}