Poll for updated tasks in project panel

[plemarquand]

When a task is updated, added or deleted it is not reflected in the project panel. There are no VS Code APIs that notify on task modification/update/deletion, so poll every 2 seconds and check if the tasks are updated. If they are, refresh the tasks list in the project panel.

[matthewbastien]

Have you tried adding a file watcher on the tasks.json? Though I suppose other extensions can add or remove tasks at will outside of the tasks.json.

[plemarquand]

That was my initial idea, but the tasks the Swift extension provides (Build All, etc...) are liable to change if we want to support changing toolchains/settings on the fly without restarting.