Fix locale-dependent float printing in GGUF metadata (#17331)

* Set C locale for consistent float formatting across all binaries.

* Add C locale setting to all tools binaries

Add std::setlocale(LC_NUMERIC, "C") to all 16 binaries in the tools/
directory to ensure consistent floating-point formatting.

* Apply suggestion from @JohannesGaessler

---------

Co-authored-by: Johannes Gäßler <johannesg@5d6.de>

tools/quantize/quantize.cpp

@@ -2,6 +2,10 @@
 #include "llama.h"
 #include "gguf.h"
 
+#include <algorithm>
+#include <cctype>
+#include <clocale>
+#include <cmath>
 #include <cstdio>
 #include <cstring>
 #include <vector>
@@ -485,6 +489,8 @@ static bool parse_layer_prune(const char * data, std::vector<int> & prune_layers
 }
 
 int main(int argc, char ** argv) {
+    std::setlocale(LC_NUMERIC, "C");
+
     if (argc < 3) {
         usage(argv[0]);
     }