A lot of the dependency versions we have pinned don't have wheels for
Python 3.12. Update almost all of them so we can upgrade Python.
The few that weren't upgraded here are black and mypy, since those will
be a bit invasive, and Pillow, which has an API change I don't want to
deal with right now (I've got a commit on another machine that has
already done the migration, so I'll do it later).
operation_ids give us better function names when generating the
typescript API from the openapi.json. BaseModel.Config.title does the
same for type names. Response models (or 204 status codes) need to be
explicit or the API will be declared as returning any.
We can't directly use frozen dataclasses from pydcs in our interface
because pydantic can't process them. Pydantic is able to automatically
convert to our modelview type from the pydcs type though.
This is briefly moving us over to my fork of pydcs while we wait for
https://github.com/pydcs/dcs/pull/206 to be merged. The adaptation is
invasive enough that I don't want it lingering for long.
A possible explanation for the infrequent CTDs we've been seeing since
adding fast forward is that QWebChannel doesn't keep a reference to the
python objects that it passes to js, so if the object is GC'd before the
front end is done with it, it crashes.
We don't really like QWebChannel anyway, so this begins replacing that
with FastAPI.
