Fix #pragma compilation with tcc on windows

tcc does not like the `.lib` suffix inside `#pragma comment (lib, "foo.lib")` directives - it fails with `tcc: error: library 'foo.lib' not found` errors. Removing the extension fixes tcc, and all major compilers (msvc/clang/gcc/mingw) compile fine without it, so this change should simply allow the headers to be compiled with a different compiler.

We've needed to, and have made this change over at vlang/v several times already, ever since we supported tcc as a C compiler on windows, since tcc, but it keeps getting reverted every time we update the headers :)

sokol_app.h

@@ -1455,16 +1455,16 @@ inline void sapp_run(const sapp_desc& desc) { return sapp_run(&desc); }
         #pragma comment (linker, "/subsystem:windows")
     #endif
 
-    #pragma comment (lib, "kernel32.lib")
-    #pragma comment (lib, "user32.lib")
-    #pragma comment (lib, "shell32.lib")    /* CommandLineToArgvW, DragQueryFileW, DragFinished */
+    #pragma comment (lib, "kernel32")
+    #pragma comment (lib, "user32")
+    #pragma comment (lib, "shell32")    /* CommandLineToArgvW, DragQueryFileW, DragFinished */
     #if defined(SOKOL_D3D11)
-        #pragma comment (lib, "dxgi.lib")
-        #pragma comment (lib, "d3d11.lib")
-        #pragma comment (lib, "dxguid.lib")
+        #pragma comment (lib, "dxgi")
+        #pragma comment (lib, "d3d11")
+        #pragma comment (lib, "dxguid")
     #endif
     #if defined(SOKOL_GLCORE33)
-        #pragma comment (lib, "gdi32.lib")
+        #pragma comment (lib, "gdi32")
     #endif
 
     #if defined(SOKOL_D3D11)
@@ -1508,8 +1508,8 @@ inline void sapp_run(const sapp_desc& desc) { return sapp_run(&desc); }
     #include <d3d11_3.h>
     #include <DirectXMath.h>
 
-    #pragma comment (lib, "WindowsApp.lib")
-    #pragma comment (lib, "dxguid.lib")
+    #pragma comment (lib, "WindowsApp")
+    #pragma comment (lib, "dxguid")
 #elif defined(_SAPP_ANDROID)
     #include <pthread.h>
     #include <unistd.h>

sokol_audio.h

@@ -495,12 +495,12 @@ inline void saudio_setup(const saudio_desc& desc) { return saudio_setup(&desc);
     #include <synchapi.h>
     #if (defined(WINAPI_FAMILY_PARTITION) && !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP))
         #define SOKOL_WIN32_NO_MMDEVICE
-        #pragma comment (lib, "WindowsApp.lib")
+        #pragma comment (lib, "WindowsApp")
     #else
-        #pragma comment (lib, "kernel32.lib")
-        #pragma comment (lib, "ole32.lib")
+        #pragma comment (lib, "kernel32")
+        #pragma comment (lib, "ole32")
         #if defined(SOKOL_WIN32_NO_MMDEVICE)
-            #pragma comment (lib, "mmdevapi.lib")
+            #pragma comment (lib, "mmdevapi")
         #endif
     #endif
 #endif

sokol_gfx.h

@@ -2565,13 +2565,13 @@ inline void sg_init_pass(sg_pass pass_id, const sg_pass_desc& desc) { return sg_
     #include <d3dcompiler.h>
     #ifdef _MSC_VER
     #if (defined(WINAPI_FAMILY_PARTITION) && !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP))
-        #pragma comment (lib, "WindowsApp.lib")
+        #pragma comment (lib, "WindowsApp")
     #else
-        #pragma comment (lib, "kernel32.lib")
-        #pragma comment (lib, "user32.lib")
-        #pragma comment (lib, "dxgi.lib")
-        #pragma comment (lib, "d3d11.lib")
-        #pragma comment (lib, "dxguid.lib")
+        #pragma comment (lib, "kernel32")
+        #pragma comment (lib, "user32")
+        #pragma comment (lib, "dxgi")
+        #pragma comment (lib, "d3d11")
+        #pragma comment (lib, "dxguid")
     #endif
     #endif
 #elif defined(SOKOL_METAL)