update solution file

Author: WeihanLi

dotnet-exec.slnx

@@ -4,8 +4,8 @@
     <File Path="build/version.props" />
   </Folder>
   <Folder Name="/src/">
-    <Project Path="src/dotnet-exec/dotnet-exec.csproj" />
     <Project Path="src/ReferenceResolver/ReferenceResolver.csproj" />
+    <Project Path="src/dotnet-exec/dotnet-exec.csproj" />
     <Project Path="src/dotnet-exec-mcp/dotnet-exec-mcp.csproj" />
   </Folder>
   <Folder Name="/tests/">