Core/Locales: Set active code page and locale used by c string functions to utf8

Closes #29455

src/tools/vmap4_assembler/VMapAssembler.cpp

@@ -20,9 +20,12 @@
 
 #include "TileAssembler.h"
 #include "Banner.h"
+#include "Locales.h"
 
 int main(int argc, char* argv[])
 {
+    Trinity::Locale::Init();
+
     Trinity::Banner::Show("VMAP assembler", [](char const* text) { std::cout << text << std::endl; }, nullptr);
 
     std::string src = "Buildings";