Benchmark for cellfinder workflow with CLI arguments

[sfmig]

Adds asv benchmarks to time the cellfinder workflows defined in PR #23.

We benchmark the full workflow and its individual steps (reading, detecting cells and saving results to file).

This PR also includes some refactoring changes to the cellfinder workflows, to allow us to split the setup steps into data downloading and other steps. This way we can download the data only once for all the repeats of a benchmark.

Would need rebasing after PR #23 is squash-and-merged

To run the benchmarks, run asv run from the directory where asv.conf.json

[codecov]

Codecov Report

Attention: 7 lines in your changes are missing coverage. Please review.

Comparison is base (f16c6b9) 92.56% compared to head (d83f97b) 92.80%.
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #24      +/-   ##
==========================================
+ Coverage   92.56%   92.80%   +0.23%     
==========================================
  Files           2        2              
  Lines         121      125       +4     
==========================================
+ Hits          112      116       +4     
  Misses          9        9              

Files	Coverage Δ
brainglobe_workflows/cellfinder/cellfinder_main.py	94.16% <89.06%> (+0.20%)	⬆️

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[alessandrofelder]

Tiny comment that I am not sure about.
Otherwise LGTM 🚀

[alessandrofelder]

Is this right? (It's a different name to the branch of the PR and I had to change it to run it locally?)

[sfmig]

yes sorry, I think that came about from the rebasing and merging of conflicts 🤔
it should have been smg/cellfinder-workflow-cli-w-tests but now that is merged main should work

actually it won't work with main just yet, since I refactored the workflows in this PR 😓

[alessandrofelder]

(Also, remember to rebase I guess @sfmig ?)