refactor: Fold GlinerNER into GliNERBridge

[rmitsch]

Description

Folds GlinerNER into GliNERBridge.

Related Issues

• Resolves Drop GliNERNER, just native GliNER indexing instead #213

Changes Made

• Folds GlinerNER into GliNERBridge.
• Minor readme updates

Checklist

• [ ] Tests have been extended to cover changes in functionality
• Existing and new tests succeed
• Documentation updated (if applicable)
• Related issues linked

Screenshots/Examples (if applicable)

[codecov]

Codecov Report

❌ Patch coverage is 80.00000% with 9 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
sieves/tasks/predictive/bridges.py	74.28%	9 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #235      +/-   ##
==========================================
+ Coverage   93.25%   93.29%   +0.03%     
==========================================
  Files          62       62              
  Lines        3441     3414      -27     
==========================================
- Hits         3209     3185      -24     
+ Misses        232      229       -3     

Files with missing lines	Coverage Δ
...es/tasks/predictive/information_extraction/core.py	92.59% <ø> (ø)
sieves/tasks/predictive/ner/bridges.py	93.85% <100.00%> (+0.60%)	⬆️
sieves/tasks/predictive/ner/core.py	95.09% <100.00%> (+0.20%)	⬆️
sieves/tasks/predictive/bridges.py	92.27% <74.28%> (+0.04%)	⬆️

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