fix: relative project path handling logic
requested to merge Luiz-Monad/vscode-dotnet-auto-attach:19-the-project-file-does-not-exist-error-when-using-project-attribute into 19-the-project-file-does-not-exist-error-when-using-project-attribute
Closes #19
This is very similar to the patch for the DotNet3, I guess we could solve the two issues with one patch. The only changed thing is the regular expression as the problem in both cases is the projectFolderPath variable.