Allow an action to get a copy of the logs raised during the action.

[julianstirling]

For very long running tasks with lots of things happening (such as scanning on the OpenFlexure microscope) it is useful to be able to save a copy of the logs for a specific action along with the data created during the action.

This adds a function built into the Thing class to allow the action to retrieve its logs.

[barecheck]

Barecheck - Code coverage report

Total: 96.47%

Your code coverage diff: 0.05% ▴

Uncovered files and lines

File	Lines
src/labthings_fastapi/actions.py	508-509, 522, 547-548, 673, 817-818, 821, 824, 872
src/labthings_fastapi/thing.py	252, 258, 283-285, 317, 405

[rwb27]

I'm happy to approve this with one change, which is the name of Thing.get_logs. I feel fairly strongly that the name of that function should make it very explicit that it's only logs related to the current invocation. That's a minor change, so I'll approve this so you don't need another round trip from me.

It might be nice to disentangle this from the server at some point - but that's too big a change to be in response to PR comments.

I have also flagged that the logs returned will be from all Things, so it would be nice in the future to move this out of Thing and into a module-level function.