conio_sdl needs a unique Guid

.. so it can be loaded in the same solution as the conio project

src/conio/conio_sdl.vcxproj

@@ -11,7 +11,7 @@
     </ProjectConfiguration>
   </ItemGroup>
   <PropertyGroup Label="Globals">
-    <ProjectGuid>{84592E48-27CA-48A6-B9C6-243D2347A578}</ProjectGuid>
+    <ProjectGuid>{8E3CE9E8-447A-452A-9306-2587FE3154A4}</ProjectGuid>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <Import Project="conio_sdl.props" />
@@ -184,4 +184,4 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>
-</Project>
+</Project>
\ No newline at end of file