Add job_dir attribute to Response class to record where a job ran

[janosh]

includes tests.

TODO

there are probably a bunch more places where the job_dir attribute should be set when executing a job.
also, should we add the same attribute to the Job class @utf? it would only be populated after the job has run which maybe makes for a worse UX?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.42%. Comparing base (a0dae68) to head (227071e).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #570   +/-   ##
=======================================
  Coverage   99.42%   99.42%           
=======================================
  Files          21       21           
  Lines        1564     1570    +6     
  Branches      425      426    +1     
=======================================
+ Hits         1555     1561    +6     
  Misses          9        9           

Files	Coverage Δ
src/jobflow/core/job.py	100.00% <100.00%> (ø)
src/jobflow/core/store.py	100.00% <100.00%> (ø)
src/jobflow/managers/local.py	100.00% <100.00%> (ø)
src/jobflow/utils/__init__.py	100.00% <ø> (ø)
src/jobflow/utils/uid.py	81.57% <ø> (ø)
src/jobflow/utils/uuid.py	100.00% <ø> (ø)

[utf]

Thanks @janosh. I think for now let's leave it off the Job object as really it is a runner feature.