dr_mp3: Fix Windows ARM64 compilation.

Based on lieff/minimp3@0d0c452dc76f744ceea4782de17bb735163cdee4. dr_mp3 is based on minimp3,
thus have similar structure.

Ieally, we should update dr_mp3, but it makes the commit noisy and dr_mp3 is updated often
so an update to dr_mp3 should be done before new LOVE releases.

src/libraries/dr/dr_mp3.h

@@ -617,7 +617,7 @@ end:
     return g_have_simd - 1;
 #endif
 }
-#elif defined(__ARM_NEON) || defined(__aarch64__)
+#elif defined(__ARM_NEON) || defined(__aarch64__) || defined(_M_ARM64)
 #include <arm_neon.h>
 #define DRMP3_HAVE_SSE 0
 #define DRMP3_HAVE_SIMD 1