Include lamella number as part of site name in FIB workflow

[tieneupin]

Minor bug fixes to the existing FIB workflow.

When generating site names for the lamella evaluation images, we forgot to take into account the site number as well. This meant that the lamella images from the different sites shared the same site name, and would overwrite one another.

This PR fixes that by introducing logic in the metadata extraction function to append the site number to the site name if it can find it from the file path (which will be the case for lamella evaluation images, as they are nested under "Lamella (N)" or "Site #N").

Additionally, the site name naming format was changed. Previously, the layers were separated by '--', but that separator is one that users have been shown to use, and thus is insufficiently robust. We have swapped to using '/' instead (e.g. "cm12345-6/grid_1/lamella_11").

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 55.03%. Comparing base (afc8fe9) to head (37ebde5).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #891      +/-   ##
==========================================
+ Coverage   54.95%   55.03%   +0.07%     
==========================================
  Files         103      103              
  Lines       11505    11515      +10     
  Branches     1526     1527       +1     
==========================================
+ Hits         6323     6337      +14     
+ Misses       4841     4836       -5     
- Partials      341      342       +1     

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.