feat: unload bioimageio models after use

[KRiedmiller]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 84.61538% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 89.73%. Comparing base (3de2117) to head (9039818).
⚠️ Report is 12 commits behind head on main.

Files with missing lines	Patch %	Lines
panseg/functionals/prediction/prediction.py	84.61%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #574      +/-   ##
==========================================
- Coverage   89.93%   89.73%   -0.21%     
==========================================
  Files         105      108       +3     
  Lines       10990    11057      +67     
==========================================
+ Hits         9884     9922      +38     
- Misses       1106     1135      +29     

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