fix: replace LegacyScript with DeprecatedFeature in pipeline lint rules

[k1LoW]

This pull request consolidates and enhances the handling of deprecated features in pipeline and TailorDB configurations. It removes the separate legacyScript lint rule in favor of a more flexible and comprehensive deprecatedFeature rule, adds new configuration options for fine-grained control, and updates documentation and test cases to reflect these changes.

Lint Rule Consolidation and Configuration Enhancements:

• Removed the standalone legacyScript lint rule and merged its functionality into the deprecatedFeature rule for pipelines, making deprecated script/validation checks part of a unified rule with new configuration options such as allowCELScript, allowDraft, and allowStateFlow in PipelineDeprecatedFeature (config/config.go, README.md). [1] [2] [3] [4] [5]

• Added allowCELScript and allowCELHooks options to the pipeline and TailorDB deprecatedFeature rules, allowing users to control whether certain deprecated patterns are permitted (config/config.go, README.md). [1] [2] [3] [4]

Lint Logic and Messaging Updates:

• Updated linting logic to use the new deprecatedFeature options, and changed warning messages for deprecated script/validation patterns to clearly state they are deprecated and recommend modern alternatives (tailor/lint.go).

Documentation Improvements:

• Expanded documentation in README.md to describe the new configuration options and clarify the scope and purpose of the deprecatedFeature rule for pipelines, TailorDB, and StateFlow (README.md).

Test Case Updates:

• Updated test configurations and expected warning messages to align with the new rule structure and messaging, ensuring tests reflect the merged and enhanced deprecatedFeature rule (tailor/helper_test.go, tailor/lint_test.go). [1] [2] [3]

[github-actions]

Code Metrics Report

Coverage	Code to Test Ratio
33.5%	1:1.5

Code coverage of files in pull request scope (74.1%)

Files	Coverage
config/config.go	0.0%
tailor/lint.go	98.5%

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Reported by octocov