Support internal/external terminal for web projects

When you launch a console or .NET project in Visual Studio with F5 there's an external console window that pops up with the output (this can be configured to use the in IDE terminal window as well).

VS

https://github.com/dotnet/vscode-csharp/assets/95136/3a32dbbf-4f8a-41b1-bd8c-6c0550e5ecf0

In VS code the focus is on the debug output and the console output and debug spew is interleaved making it extremely hard to look at the output:

VS Code

https://github.com/dotnet/vscode-csharp/assets/95136/7c0fdfbe-c2a5-460a-a9b7-2beabcd8d502

Instead, we should show the console output from launches in a terminal window (similar to how to build is done)