Rust: fix qltest logging

[redsun82]

Also added a new logging_color option to disable coloring (which does not look very good in files).

[Copilot]

PR Overview

This PR addresses issues in the qltest logging by updating the extractor’s logging options and adding a new logging_color option so that colored output can be disabled when writing to files. Key changes include:

• Adding a new color option to the CodeQL extractor configuration file.
• Updating Cargo.toml to add the is-terminal dependency.
• Adjusting logging setup in main.rs and introducing a new Color enum (with corresponding functionality) in config.rs and shared/tree-sitter-extractor.

Reviewed Changes

File	Description
rust/codeql-extractor.yml	Added a new color option with a pattern restricting values to "yes" or "no".
rust/extractor/Cargo.toml	Added a dependency on is-terminal.
rust/extractor/src/main.rs	Updated logging subscriber initialization to use the logging_color option.
rust/extractor/src/config.rs	Introduced a new Color enum with a yes() helper method and integrated it into Config.
shared/tree-sitter-extractor/src/extractor/mod.rs	Added a Color enum with a from(bool) method and updated the default_subscriber_with_level accordingly.

Copilot reviewed 7 out of 7 changed files in this pull request and generated 1 comment.

Comments suppressed due to low confidence (1)

rust/extractor/src/config.rs:37

• [nitpick] Consider implementing a From for Color to align its API with the Color enum defined in shared/tree-sitter-extractor, which may simplify conversions and improve consistency across modules.

pub enum Color {

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