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/nnue/network.cpp

@@ -51,10 +51,18 @@ INCBIN(EmbeddedNNUE, EvalFileDefaultName);
     // separate, non-LTO nnue_embed.o (with strong symbols) can override them during the LTO link,
     // (INCBIN can't deduplicate.)
     #define WEAK_SYM __attribute__((weak))
-extern const unsigned char gEmbeddedNNUEData[] WEAK_SYM = {
-    #embed EvalFileDefaultName
+extern const unsigned char gEmbeddedNNUEData[] WEAK_SYM =
+    #ifdef __has_embed
+  {
+        #embed EvalFileDefaultName
 };
-extern const unsigned int gEmbeddedNNUESize WEAK_SYM = sizeof(gEmbeddedNNUEData);
+const int padding = 0;
+    #else
+        #include "../universal/network_dump.inc"
+  ;
+const int padding = 1;  // trailing NUL byte
+    #endif
+extern const unsigned int gEmbeddedNNUESize WEAK_SYM = sizeof(gEmbeddedNNUEData) - padding;
 #else
 const unsigned char gEmbeddedNNUEData[1] = {0x0};
 const unsigned int  gEmbeddedNNUESize    = 1;