Convert xrm images to tiffs

[stephen-riggs]

This adds functionality to read xrm images and request these are converted to tiffs.

Currently this identifies atlas and roi images by finding out if they are montages, and splits them based on pixel size. Better methods may be possible but this should work for now.

Rather than doing the xrm to tiff conversion here it puts a message onto rabbitmq. See DiamondLightSource/cryoem-services#278

Also contains a stub for registering rois in the database.

[codecov]

Codecov Report

❌ Patch coverage is 80.68182% with 17 lines in your changes missing coverage. Please review.
✅ Project coverage is 53.23%. Comparing base (8aa4d35) to head (c12f36f).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #837      +/-   ##
==========================================
+ Coverage   53.10%   53.23%   +0.12%     
==========================================
  Files         100      101       +1     
  Lines       10855    11106     +251     
  Branches     1439     1489      +50     
==========================================
+ Hits         5765     5912     +147     
- Misses       4783     4873      +90     
- Partials      307      321      +14     

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[tieneupin]

Some comments and suggestions, but the code looks good otherwise!