Expand Tag Set: views & reductions

### 🚀 The feature, motivation and pitch

`pointwise` tag has found use in multiple places. It would also be useful to have `reduction` and `view` tags. Especially the latter is often re-created adhoc.

cc @ezyang @bhosmer @smessmer @ljk53 @bdhirsh @SherlockNoMad

### Alternatives

_No response_

### Additional context

_No response_