Move / replicate syncing | working notification to button click area

[MattB-msft]

Today..
when a developer clicks on an operation in VS Code the status of that operation is visually separated from the developer by a large distance
see:

There is not an indication that the extension is actually 'doing' anything while this process is underway, and the buttons continue to be available.

The need here is to:

• to disable the buttons for sync when a sync operation is in process,
• provide a visual indication of progress in that window area that is in context with what is going on.
  • This should be iconography or a loading indicator only..
  • The detailed status should remain where it is and also reflect in the log for the LSP

for example,
if previewing changes, a loading spinner could be shown next to the "Remote changes" node while its being reloaded.