refactor: simplify the interface for behavior version

[georgeh0]

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[Copilot]

Pull Request Overview

This PR refactors the behavior version handling in the function executor interface to simplify the API design. Instead of having behavior_version() as a method on executor traits, the behavior version is now determined during the build/analysis phase and returned as part of the build output.

Key changes:

• Moved behavior version from executor runtime interface to build-time output
• Renamed resolve_schema to analyze to better reflect its expanded responsibilities
• Introduced structured output types (SimpleFunctionBuildOutput and SimpleFunctionAnalysisOutput) to replace tuple returns

Reviewed Changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
rust/cocoindex/src/ops/interface.rs	Added SimpleFunctionBuildOutput struct and removed behavior_version() method from SimpleFunctionExecutor trait
rust/cocoindex/src/ops/factory_bases.rs	Added SimpleFunctionAnalysisOutput struct, renamed resolve_schema to analyze, and removed behavior_version() implementations from executor wrappers
rust/cocoindex/src/ops/py_factory.rs	Updated to extract behavior version from Python executors during build phase and return it in SimpleFunctionBuildOutput
rust/cocoindex/src/ops/functions/split_recursively.rs	Updated analyze method to return SimpleFunctionAnalysisOutput with behavior_version: None
rust/cocoindex/src/ops/functions/split_by_separators.rs	Updated analyze method to return SimpleFunctionAnalysisOutput with behavior_version: None
rust/cocoindex/src/ops/functions/parse_json.rs	Updated analyze method to return SimpleFunctionAnalysisOutput with behavior_version: None
rust/cocoindex/src/ops/functions/extract_by_llm.rs	Removed behavior_version() method from executor and moved version to analyze output
rust/cocoindex/src/ops/functions/embed_text.rs	Removed behavior_version() method from executor and moved client's version to analyze output
rust/cocoindex/src/ops/functions/detect_program_lang.rs	Updated analyze method to return SimpleFunctionAnalysisOutput with behavior_version: None
rust/cocoindex/src/builder/analyzer.rs	Updated to extract behavior version from build_output and include it in fingerprinting earlier in the build process
rust/cocoindex/src/ops/functions/test_utils.rs	Updated test helper to destructure SimpleFunctionBuildOutput instead of tuple

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