Universal builds for Android armv8 and compatibility with older compilers

- We add a new path for supporting universal builds without #embed . `xxd` causes the compiler to run out of memory, so instead we embed it as a string literal created at compile time.
    - This file is created in `net.sh`, and only if `--embed-dir` isn't supported + we are doing a universal build.
    - This was necessary because Android NDK seems to not support embed, idk why
- A couple other Makefile tweaks were necessary for the Android path.
- While we're at it, remove the non-universal arm64 windows and android binaries.

closes https://github.com/official-stockfish/Stockfish/pull/6827

No functional change

src/universal/nnue_embed.cpp

@@ -2,7 +2,15 @@
 
 #include "../evaluate.h"
 
-extern const unsigned char gEmbeddedNNUEData[] = {
-#embed EvalFileDefaultName
+extern const unsigned char gEmbeddedNNUEData[] =
+#ifdef __has_embed
+  {
+    #embed EvalFileDefaultName
 };
-extern const unsigned int gEmbeddedNNUESize = sizeof(gEmbeddedNNUEData);
+const unsigned int padding = 0;
+#else
+    #include "network_dump.inc"
+  ;
+const unsigned int padding = 1;  // trailing NUL byte
+#endif
+extern const unsigned int gEmbeddedNNUESize = sizeof(gEmbeddedNNUEData) - padding;