Get the project compiling on Apple Silicon macOS natively (arm64) (#2827)

I havn't tested it yet, but I can almost guarantee that atleast `goalc`
will not work in the slightest!

But the project is atleast fully compiling. My hope is to start
translating some AVX to NEON next / get `goalc` working...eventually.

common/custom_data/TFrag3Data.cpp

@@ -3,7 +3,11 @@
 #include <algorithm>
 #include <functional>
 
+#ifndef __aarch64__
 #include "xmmintrin.h"
+#else
+#include "third-party/sse2neon/sse2neon.h"
+#endif
 
 #include "common/util/Assert.h"