Read whether a search map is a lamella and request hooks

[stephen-riggs]

• Adds a lamella column to the search map database table
• Reads lamella status from the Session.dm file when registering search maps
• Runs any hooks with the name murfey.hooks.search_map, giving ispyb id, file path, lamella status and pixel size

[codecov]

Codecov Report

❌ Patch coverage is 75.43860% with 14 lines in your changes missing coverage. Please review.
✅ Project coverage is 52.24%. Comparing base (5899043) to head (eee91b5).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #820      +/-   ##
==========================================
- Coverage   52.40%   52.24%   -0.17%     
==========================================
  Files          98       98              
  Lines       10493    10683     +190     
  Branches     1384     1448      +64     
==========================================
+ Hits         5499     5581      +82     
- Misses       4705     4796      +91     
- Partials      289      306      +17     

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