When applying repository operations via Drydock, provide more context on OperationType

Summary: Ref T13195. See PHI845. For custom OperationTypes, provide access to the Interface and Operation via getters. This is just for convenience, since passing these around everywhere can be a bit of a pain if you have a deep-ish stack of things or love using callbacks or whatever.

Test Plan: Landed a revision via upstream Drydock operations.

Reviewers: amckinley

Reviewed By: amckinley

Subscribers: PHID-OPKG-gm6ozazyms6q6i22gyam

Maniphest Tasks: T13195

Differential Revision: https://secure.phabricator.com/D19636