Discussion: Usage statistics and metrics

As a developer I would like to be able to easily see a number of things about my plans, plan stubs and devices:
* When was the last time this was used
* Which beamline was it used on - maybe even who used it if we have good granularity on this
* How long did it take

## Acceptance Criteria
* We compile a list of requirements
* We come up with a plan of where we will implement these requirements and how
* We write relevant issues for them

Note:
* As discussed we may not get perfect statistics all the time e.g. `my_plan` on i03 may not be the same as `my_plan` on i04 or `my_plan` today may be very different from `my_plan` yesterday. This is fine, we shouldn't let perfect be the enemy of good