Documentation wishlist

[danielballan]

• Tutorial on implementing trigger on an acquire bit that implements put-completion (crib from https://nbviewer.jupyter.org/github/bluesky/tutorials/blob/master/Device.ipynb)
• Tutorial on implementing set on a signal that implements put-completion (crrb from https://nbviewer.jupyter.org/github/bluesky/tutorials/blob/master/Device.ipynb again)
• How-to guides for more involved and/or specific trigger and set implementations (https://nbviewer.jupyter.org/github/bluesky/tutorials/blob/master/Device.ipynb and also PVPositionerPC).
• Area detector basics (crib from CHX beamline config, for example)
• Non-EPICS detector that generates external assets
• Documentation of how AD dispatch works
• Documentation on collect_asset_docs
• Explanation of which methods return immediately, block (hopefully briefly for a little I/O), or return status objects. Mention future plans to do more async.

[mrakitin]

The relevant example notebooks can now be found in e.g. https://github.com/bluesky/tutorials/blob/main/archive/Device.ipynb.