Add wp_functions_compatibility check with generated WordPress function @since dataset

[davidperezgar]

This PR implements a new Plugin Check rule to detect WordPress function usage that is not compatible with a plugin’s declared Tested up to version.

It introduces a WP Since-style data pipeline inside this repository:

• A generated dataset mapping WordPress functions to their introduced version (@since)
• A new static check: wp_functions_compatibility
• Local generation script + scheduled workflow to keep the dataset updated
• Unit tests and test fixtures
• Documentation updates

What’s Included

• New check: wp_functions_compatibility
• New dataset: includes/Vars/wp-functions-since.json
• New generator script: tools/generate-wp-function-since-data.php
• New workflow: .github/workflows/generate-wp-functions-since-data.yml
• Tests for positive/negative coverage
• Checks docs updated

Related

• Issue: Check: WordPress functions are compatible with WordPress version #961
• Reference project: https://github.com/eduardovillao/wp-since

Notes

This follows the same core idea as WP Since (function-version compatibility via generated metadata), adapted to Plugin Check architecture and check lifecycle.

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Co-authored-by: davidperezgar <davidperez@git.wordpress.org>
Co-authored-by: ernilambar <nilambar@git.wordpress.org>

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