R1:0ceab7d36f91

Rename "getReviewerStatus()" to "getReviewers()"

Summary:
Ref T10967. Improves some method names:

- `Revision->getReviewerStatus()` -> `Revision->getReviewers()`
- `Revision->attachReviewerStatus()` -> `Revision->attachReviewers()`
- `Reviewer->getStatus()` -> `Reviewer->getReviewerStatus()` (this is mostly to make this more greppable)

Test Plan:
- bunch o' `grep`
- Browsed around.
- If I missed anything, it should fatal in an obvious way. We have a lot of other `getStatus()` calls and it's…