Show JobInterface::getDescription() for queue/run -v

[ostark]

Similar to the output in the CP, the verbose output of the ./craft queue/run -v command should include the job description. This can be more meaningful than the class name.

before 🤔

./craft queue/run -v
2018-01-25 23:14:41 [29] ostark\upper\jobs\PurgeCacheJob (attempt: 1) - Started
2018-01-25 23:14:41 [29] ostark\upper\jobs\PurgeCacheJob (attempt: 1) - Done (0.001 s)
2018-01-25 23:14:41 [30] craft\queue\jobs\DeleteStaleTemplateCaches (attempt: 1) - Started
2018-01-25 23:14:41 [30] craft\queue\jobs\DeleteStaleTemplateCaches (attempt: 1) - Done (0.002 

---

after 😎

 ./craft queue/run -v
2018-01-25 23:15:59 [31] Purge Tag: el74 (attempt: 1) - Started
2018-01-25 23:15:59 [31] Purge Tag: el74 (attempt: 1) - Done (0.002 s)
2018-01-25 23:15:59 [32] Deleting stale template caches (attempt: 1) - Started
2018-01-25 23:15:59 [32] Deleting stale template caches (attempt: 1) - Done (0.003 s)

[ostark]

If this PR makes sense to you, I would love go futher and provide a 'fix' for the queue.log, which is kind of useless at the moment: Currently there is just noise and actual queue messages don't get logged at all.

[brandonkelly]

Like the improvement, thanks! Happy to review other related PRs.