fix: use _wfopen for non-ASCII log paths on Windows (#16)

* fix: use _wfopen for non-ASCII log paths on Windows

When the log directory path contains non-ASCII characters (e.g. CJK),
path.string() converts the internal wstring to narrow using the system
active code page (ACP), not UTF-8. On Chinese Windows (ACP=936/GBK),
this produces garbled bytes that cause fopen to throw an exception.

Using _wfopen with the wide string path directly preserves the characters
regardless of ACP setting.

* fix: check _wfopen return value to avoid UB

* fix(logger): report _wfopen failure instead of silent return

* Update Logger.cpp

---------

Co-authored-by: MistEO <mistereo@hotmail.com>

Author: Windsland52

source/Logger/Logger.cpp

@@ -2,6 +2,8 @@
 
 #include "MaaUtils/Logger.h"
 
+#include <cerrno>
+#include <iostream>
 #include <thread>
 
 #ifdef _WIN32
@@ -197,8 +199,10 @@ void Logger::open(bool append)
 #ifdef _WIN32
 
     // https://stackoverflow.com/questions/55513974/controlling-inheritability-of-file-handles-created-by-c-stdfstream-in-window
-    std::string str_log_path = log_path_.string();
-    FILE* file_ptr = fopen(str_log_path.c_str(), append ? "a" : "w");
+    FILE* file_ptr = _wfopen(log_path_.c_str(), append ? L"a" : L"w");
+    if (!file_ptr) {
+        return;
+    }
     SetHandleInformation((HANDLE)_get_osfhandle(_fileno(file_ptr)), HANDLE_FLAG_INHERIT, 0);
     ofs_ = std::ofstream(file_ptr);