Expose VacuumMode parameter to enable full Vacuums

[adamjones2]

We should be able to do

await table.VacuumAsync(new VacuumOptions { VacuumMode = VacuumMode.Full }, cancellationToken);

This is missing in the .Net API.

[adamjones2]

hi @mightyshazam, would you be able to review this?

[mightyshazam]

Looks fine, but there are build errors.

[adamjones2]

@mightyshazam Thanks! Fixed the build errors now if you can re-review.