Move things out of NodeController and LocalNodeController

See merge request !54

This isn't specific to the Controller implementation; just access the
config directly.

This just delegated back to `Node.nick`; use that directly instead.

Move tor-specific code from `chutney.TorNet` to new subpackage `chutney.tor`

See merge request !51

This fixes a circular import failure

Apply tor CI bookworm migration diff

See merge request !53

This is needed to drop the `physical` runner tag, which appears to no
longer be set for any runners.

While we're at it, apply other recent changes to tor's CI updating from
bullseye to bookworm. This applies the equivalent of the patch generated
from this diff in the tor repo:

```
git diff 704540fe461dcd4f72f360334a6f2ab6a5d80e38..origin/maint-0.4.8 -- .gitlab-ci.yml
```

Add support for families.

Closes #40032

See merge request !52

Includes happy family support.

Use pyasyncore and pyasynchat for python>3.11

See merge request !50

Workaround for
<tpo/core/chutney#40019>

Node.getController: return NodeController instead of LocalNodeController

See merge request !49

We call this method via the base class, so it belongs there, but it may
not make sense to take a pid for some implementations of NodeController
(e.g. a "RemoteNodeController").

It is still useful to be able to provide the pid internally in
LocalNodeController, so we move most of the internal implementation
details to a new function LocalNodeController._is_running_with_pid.

Deletes extra logic here left-over from using Environments, where we
couldn't be sure the `hs` field was set or that it would have the
expected type.