[LIMS-1761] Add initial model uploads

[gfrn]

JIRA ticket: [LIMS-1761][(https://jira.diamond.ac.uk/browse/LIMS-1761)

Summary:

To further improve 3D classification models, users should be able to provide a low-res initial model to act as a starting point for building these classes.

This allows users to upload initial models which are dropped in the visit folder.

Changes:

• Add initial model uploads

To test:

Assuming you've mounted /dls and you're using the local development DB. Make sure you delete the files you've uploaded from the visit folder of the visit you're using afterwards

You can use ispyb-restore too, just use a current EM visit (like bi34108-28)

• Send a POST request to /proposals/cm31111/sessions/5/initialModel with image.mrc.zip as the body (unzipped), check if the image is deposited in the visit directory for cm31111-5
• Send a POST request to /proposals/cm31111/sessions/5/initialModel with broken.mrc.zip as the body (unzipped), check if a 415 is returned (invalid file type)
• Send a POST request to /proposals/cm31111/sessions/5/initialModel with any non-MRC file, check if 415 is returned

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.78%. Comparing base (63a7044) to head (5c5af86).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #17      +/-   ##
==========================================
+ Coverage   94.71%   94.78%   +0.07%     
==========================================
  Files          46       46              
  Lines        1834     1859      +25     
==========================================
+ Hits         1737     1762      +25     
  Misses         97       97              

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[RichB-DLS]

Unable to test locally due to dls mount issues but @gfrn has had this in use on staging for approx 2wks.