Split out common AD file plugin logic into core writer class, create ADTiffWriter

[jwlodek]

This now seems to mostly work, at least from the collection side. The data cannot be read back via tiled at the moment, however, so for now marking as draft, since I may need to edit the docs generated somewhat to account for this. PRs into bluesky and tiled have been merged to allow reading back collected TIFF data with this branch.

Addresses #595 .

TODO:

• Add tests for tiff writer
• Make sure we can read the data back through tiled
• Make sure HDF writer still works as it did.

[jwlodek]

@genematx Here are the ophyd async changes that introduce tiff writer support, specifically you can look at collect_stream_docs in the ADWriter class to see what I am emitting

[mrakitin]

We reviewed the changes interactively with @jwlodek and @RobertSchaffer1, and they make sense to me.

@coretl, if you are happy with the changes, Jakub will rebase the PR branch to resolve the conflicts.

[coretl]

I had some ideas that will remove some of the cast statements, what do you reckon?

[jwlodek]

Applied the changes, rebased, and tests are now passing, but for some reason I am having issues running with real hardware. I think I will start a fresh environment on Monday and confirm if I can collect both HDF and TIFF data and read it back via tiled.

[coretl]

I can see why you've done it, but I would still prefer to pass in the writer instance rather than class into the AreaDetector base class. I've made some suggestions in jwlodek#3

[jwlodek]

This is I think ready for another review pass @coretl , but I need to figure out what is happening with the tests on 3.12...

[jwlodek]

@coretl applied your suggestions, I agree it is cleaner this way. Still have a unawaited coro error on 3.12 - need to track that down

[coretl]

A few minor points now, looks almost done, thanks!

[jwlodek]

I think this is now ready for a final once over and then merge

[coretl]

From a skim of this it looks fine. One possibly unused variable...