Add a standardized benchmark command speedtest.

`speedtest [threads] [hash_MiB] [time_s]`. `threads` default to system concurrency. `hash_MiB` defaults to `threads*128`. `time_s` defaults to 150.

Intended to be used with default parameters, as a stable hardware benchmark.

Example:
```
C:\dev\stockfish-master\src>stockfish.exe speedtest
Stockfish dev-20240928-nogit by the Stockfish developers (see AUTHORS file)
info string Using 16 threads
Warmup position 3/3
Position 258/258
===========================
Version                    : Stockfish dev-20240928-nogit
Compiled by                : g++ (GNUC) 13.2.0 on MinGW64
Compilation architecture   : x86-64-vnni256
Compilation settings       : 64bit VNNI BMI2 AVX2 SSE41 SSSE3 SSE2 POPCNT
Compiler __VERSION__ macro : 13.2.0
Large pages                : yes
User invocation            : speedtest
Filled invocation          : speedtest 16 2048 150
Available processors       : 0-15
Thread count               : 16
Thread binding             : none
TT size [MiB]              : 2048
Hash max, avg [per mille]  :
    single search          : 40, 21
    single game            : 631, 428
Total nodes searched       : 2099917842
Total search time [s]      : 153.937
Nodes/second               : 13641410
```

-------------------------------

Small unrelated tweaks:
 - Network verification output is now handled as a callback.
 - TT hashfull queries allow specifying maximum entry age.

closes https://github.com/official-stockfish/Stockfish/pull/5354

No functional change

src/memory.cpp

@@ -212,6 +212,37 @@ void* aligned_large_pages_alloc(size_t allocSize) {
 
 #endif
 
+bool has_large_pages() {
+
+#if defined(_WIN32)
+
+    constexpr size_t page_size = 2 * 1024 * 1024;  // 2MB page size assumed
+    void*            mem       = aligned_large_pages_alloc_windows(page_size);
+    if (mem == nullptr)
+    {
+        return false;
+    }
+    else
+    {
+        aligned_large_pages_free(mem);
+        return true;
+    }
+
+#elif defined(__linux__)
+
+    #if defined(MADV_HUGEPAGE)
+    return true;
+    #else
+    return false;
+    #endif
+
+#else
+
+    return false;
+
+#endif
+}
+
 
 // aligned_large_pages_free() will free the previously memory allocated
 // by aligned_large_pages_alloc(). The effect is a nop if mem == nullptr.