REDESIGNED: `rcore_desktop_win32` platform backend

Now it works! but there is still work to do to support all required features...

I really enjoyed reviewing and redesigning this platform backend!

projects/VS2022/raylib/raylib.vcxproj

@@ -504,6 +504,20 @@
       <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug.DLL|x64'">true</ExcludedFromBuild>
       <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug.DLL|ARM64'">true</ExcludedFromBuild>
     </ClCompile>
+    <ClCompile Include="..\..\..\src\platforms\rcore_desktop_win32.c">
+      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</ExcludedFromBuild>
+      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release.DLL|Win32'">true</ExcludedFromBuild>
+      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">true</ExcludedFromBuild>
+      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug.DLL|Win32'">true</ExcludedFromBuild>
+      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">true</ExcludedFromBuild>
+      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'">true</ExcludedFromBuild>
+      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release.DLL|x64'">true</ExcludedFromBuild>
+      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release.DLL|ARM64'">true</ExcludedFromBuild>
+      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|x64'">true</ExcludedFromBuild>
+      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'">true</ExcludedFromBuild>
+      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug.DLL|x64'">true</ExcludedFromBuild>
+      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug.DLL|ARM64'">true</ExcludedFromBuild>
+    </ClCompile>
     <ClCompile Include="..\..\..\src\platforms\rcore_drm.c">
       <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</ExcludedFromBuild>
       <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release.DLL|Win32'">true</ExcludedFromBuild>

projects/VS2022/raylib/raylib.vcxproj.filters

@@ -46,6 +46,9 @@
     <ClCompile Include="..\..\..\src\platforms\rcore_web.c">
       <Filter>Source Files\Platform Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\..\src\platforms\rcore_desktop_win32.c">
+      <Filter>Source Files\Platform Files</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\..\src\external\cgltf.h">