Visual Studio Code integration?

Hi,

Inside VSCode we can specify some settings like:
```
"go.testFlags": ["-v", "-count=1"],
"go.testTimeout": "120s",
```

I'm wondering if someone here has integrated `gotestsum` so VSCode will use it when running tests from the code editor (arrows above test functions)?

Looking for this because having the same output between IDE triggers and manual CLI would be great 👍

Thank you,

Start by checking how VS Code's Go integration uses go.testFlags and go.testTimeout when the arrows above test functions run tests. Then review gotestsum's existing test-runner entry points and CLI output behavior. Done means editor-triggered tests invoke gotestsum and produce the same output as the manual CLI, but the issue does not name files or tests to guide implementation.

Written by the indexing model from the issue text.