Add option to force processing of specific entities

[andebor]

I would like a feature to mark an entity in a dataset as updated even if it hasn't been changed. Basically just a touch.
When fixing an issue related to an edge case entity, we usually need to run a full sync to reprocess the affected entities. This can sometimes lead to some unwanted effects (and potentially take several hours) and it would help a lot if we could specifically target the relevant entities instead.

Ideal Process

1. Discover one or more entities than needs special handling in the transform
2. Do changes to transform
3. Deploy new version
4. Touch list of affected entities in source dataset resulting in updated versions in sink dataset