Merge worker

The merge worker (MergeWorker) is a deferred worker that is responsible for merging the tables created by the projection worker into a single table. To use the merge worker, register a merge worker task that includes a merge worker options dictionary:

// Syntax example only
Guid taskId = await _taskManager.RegisterDeferredTaskAsync(
    new MergeWorkerOptionsDictionary("targettable", "sctest_", TimeSpan.FromHours(2), "schema"),
    null,
    new TimeSpan(0, 10, 0))
    .ConfigureAwait(false);