Option to associate a rev id to a RC log entry, allowing unpatrolled status

Option to associate a rev id to a RC log entry, allowing unpatrolled status

This provides a mechanism to associate a revision id to an action.
For example in core, it makes sense for moves and uploads, which both
generate null revisions (also protections, but it isn't interesting if one
has patrolling in mind).

Crucially, in that case an unpatrolled status is allowed for the RC item.
So if the performer of the action is not autopatrolled, it will be displayed
as unpatrolled, and if the performer is autopatrolled, it will record an
autopatrol action.

When one associates a rev id to a type of action, one should also implement
a mechanism to patrol said action, since getting the diff for the associated
revision is not user friendly and works only if RC patrol is enabled.
This is done for uploads in If71af58719a4461f12d125455b7bef07164525ca (with
a new file patrol) and for moves in Ie0fa417feaf930c096b69521fc54d57aecd6cd51
(within RC patrol).

Extensions might possess other such actions that could benefit from patrolling.

Bug: T122089
Change-Id: I694424eca32b69e277f89d4c15183870983d0993