Enable "sync" button

[Allan Bowe]

With the addition of the new fs sync capabilities of SASjs, we need a button to bring this feature into the VS Code extension.

When the user clicks this button it will run the equivalent of sasjs fs sync for each local/remote folder mapping in the syncDirectories array of the active target - and display the response (somehow) with regard to any unsuccessful mappings.

The logs should appear in the sasjsresults folder, regardless of the success / failure of the operation.