feat: add TextAnalyzerConfig for ASCII folding in text properties

[amourao]

• Added TextAnalyzerConfig with ASCII folding
• Tests for config serialization
• TODO: add stopword presets to TextAnalyzerConfig

[orca-security-eu]

Orca Security Scan Summary

Status	Check	Issues by priority
Passed	Infrastructure as Code	0   0   0   0	View in Orca
Passed	SAST	0   0   0   0	View in Orca
Passed	Secrets	0   0   0   0	View in Orca
Passed	Vulnerabilities	0   0   0   0	View in Orca

[Copilot]

Pull request overview

Adds a TextAnalyzerConfig API to configure ASCII folding for text / text[] properties (including nested properties), and wires it through schema (de)serialization so it can be created and parsed from server configs.

Changes:

• Introduced TextAnalyzerConfig (Pydantic) and internal _TextAnalyzerConfig (dataclass) for ASCII folding configuration.
• Added parsing/serialization support for textAnalyzer in property and nested property configs.
• Added unit + integration tests for serialization and config parsing/round-tripping.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
weaviate/collections/classes/config.py	Adds TextAnalyzerConfig and text_analyzer support to property models/serialization.
weaviate/collections/classes/config_methods.py	Parses textAnalyzer from server schema into internal config dataclasses.
weaviate/classes/config.py	Re-exports TextAnalyzerConfig from the collections config API.
test/collection/test_config.py	Adds unit tests for TextAnalyzerConfig serialization and validation.
test/collection/test_config_methods.py	Adds tests ensuring schema parsing populates text_analyzer correctly.
integration/test_collection_config.py	Adds integration coverage for creating collections with text_analyzer (including nested properties).

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[orca-security-eu]

Orca Security Scan Summary

Status	Check	Issues by priority
Passed	Secrets	0   0   0   0	View in Orca

[codecov-commenter]

Codecov Report

❌ Patch coverage is 71.95122% with 92 lines in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (dev/1.37@9bea05a). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
integration/test_collection_config.py	42.20%	89 Missing ⚠️
weaviate/collections/config/executor.py	80.00%	3 Missing ⚠️

Additional details and impacted files

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##             dev/1.37    #2006   +/-   ##
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  Lines               ?    22046           
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  Misses              ?     2723           
  Partials            ?        0           

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[dirkkul]

I would just add it as static method, same as inverted_index right below

[amourao]

I've done it but my only gripe there is the snake casing vs camel casing on the top methods 😅