Bundled production scanner runtime

This plugin executes PHP_CodeSniffer and PHPCompatibilityWP in-process as
a user-facing runtime feature; no shell command or remote scanner is used.
Only runtime source, standards and license files are included here.
Dependency versions are managed from the source repository composer.lock.

PHP_CodeSniffer 4.0.4 - BSD-3-Clause
PHPCompatibility 10.0.0-alpha2 - LGPL-3.0-or-later
PHPCompatibilityParagonie 2.0.0-alpha2 - LGPL-3.0-or-later
PHPCompatibilityWP 3.0.0-alpha2 - LGPL-3.0-or-later
PHPCSUtils 1.2.3 - LGPL-3.0-or-later
