Add support for postponed linters
Summary:
This adds:
- A new "arc:lint-postponed" diff property which stores a list of
lint names that are postponed and a finishpostponedlinters conduit
method which removes linters from this list. Postponed linters are
shown in the lint details.
- A updatelintmessages conduit message, which adds additional lint
messages to the "arc:lint" diff property.
In combination, this provides very basic support for running
asynchronous static analysis tools. When the diff is being created,
a list of asynchronous static analysis runs can be added to the
diff's postponed linters list. As these postponed linters finish
up, then can report new lint messages back to the diff then mark
themselves as complete.
The client is currently responsible for filtering the lint messages
by things like affected lines and files.
Test Plan:
Used conduit call API to add lint messages and remove postponed
linters from a test diff.
Reviewers: epriestley, vrana, nh, jungejason
Reviewed By: epriestley
CC: aran, Korvin
Maniphest Tasks: T1332
Differential Revision: https://secure.phabricator.com/D2792