Adjust the loading of BAT from a wheel file in such a way that all
submodules are loaded in one go. This ensures that they're still
isolated from the rest of Blender (so other add-ons won't find our BAT),
but not from each other (so that there is only one copy of each
submodule).
In practice, this solves an issue where calling
`blender_asset_tracer.blendfile.set_strict_pointer_mode(False)` had no
effect. This was caused by each loaded submodule having a different copy
of `blendfile`.
Also loaded modules are logged more explicitly (at INFO level) to aid in
debugging later on.
Due to issues with library overrides and unsynced pointers, it's quite
common for the Blender Animation Studio to get "address unknown" errors
from BAT. To avoid these, Strict Pointer Mode is disabled.
Manager always creates an implicit variable `{jobs}`. This used to be
Shaman-dependent, but now it's always there (has been for a while). This
is now reflected in an add-on comment, and in an extra unit test.
Shaman prevents duplicate checkout directories, and communicates the actual
location back to the client. This wasn't used by the add-on though, so
the Flamenco job definition would point to the wrong files.
The code was still using the old `visible: true/false` approach, which
was replaced with a visibility string. The GUI and job submission code now
use the same function to determine visibility.
Add `fetchJobTasks` operation to the Jobs API. This returns a summary of
each of the job's tasks, suitable for display in a task list view.
The actually used fields may need tweaking once we actually have a task
list view, but at least the functionality is there.
