Fix Windows header conflicts with termcolor library

Add WIN32_LEAN_AND_MEAN and NOMINMAX defines before including Windows headers to prevent macro conflicts (especially min/max macros) with C++ standard library and termcolor dependencies.

Changes:
- examples/cli/cli.cpp: Reorder includes and add Windows defines
- src/whisper.cpp: Add Windows defines at the top of the file

examples/cli/cli.cpp

@@ -15,9 +15,15 @@
 #include <cfloat>
 
 #if defined(_WIN32)
+#define WIN32_LEAN_AND_MEAN
 #ifndef NOMINMAX
 #define NOMINMAX
 #endif
+#endif
+
+#include <termcolor/termcolor.hpp>
+
+#if defined(_WIN32)
 #include <windows.h>
 #endif
 

src/whisper.cpp

@@ -1,3 +1,10 @@
+#ifdef _WIN32
+#define WIN32_LEAN_AND_MEAN
+#ifndef NOMINMAX
+#define NOMINMAX
+#endif
+#endif
+
 #include "whisper.h"
 #include "whisper-arch.h"