Customizable output paths for Otter Generate

[chrispyles]

As titled. Also includes an update to Otter Assign which changes the name of the generated autograder zip file to {notebook stem}-autograder_{timestamp}.zip.

Closes #401

[codecov]

Codecov Report

Merging #402 (e502ce5) into master (a5f3608) will increase coverage by 0.03%.
The diff coverage is 94.44%.

@@            Coverage Diff             @@
##           master     #402      +/-   ##
==========================================
+ Coverage   79.49%   79.52%   +0.03%     
==========================================
  Files          90       90              
  Lines        5057     5060       +3     
==========================================
+ Hits         4020     4024       +4     
+ Misses       1037     1036       -1     

Impacted Files	Coverage Δ
otter/assign/v0/utils.py	77.86% <ø> (ø)
test/test_generate/test_autograder.py	100.00% <ø> (ø)
test/test_grade.py	100.00% <ø> (ø)
otter/generate/__init__.py	83.33% <83.33%> (+0.50%)	⬆️
otter/assign/utils.py	68.38% <100.00%> (+0.83%)	⬆️
test/__init__.py	90.00% <100.00%> (+0.34%)	⬆️
test/test_assign.py	100.00% <100.00%> (ø)

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[chrispyles]

@fritterhoff it looks like builds on this branch have started failing due to something related to buildkit. Do you have any idea what's going on here? https://github.com/ucbds-infra/otter-grader/runs/3642222139#step:5:168

[chrispyles]

Update on the build issues: this seems to be a known issue with the GHA cache for buildx. docker/buildx#681

[champoll]

Just to clarify, how do I use this? When I run "otter assign" on my notebook, the output still contains a file named autograder.zip

[fritterhoff]

Update on the build issues: this seems to be a known issue with the GHA cache for buildx. docker/buildx#681

Ah sorry ... I missed the notification. Sorry that I did not react.

[chrispyles]

@champoll This fix is part of v3.2.0, which has not yet been released. If you want to use it, you will need to install the development version of Otter from GitHub.