[opentelemetry-php-contrib] Add auto-instrumentation for the Phalcon PHP framework

Proposal

Add an auto-instrumentation package for apps built on the Phalcon PHP framework to open-telemetry/opentelemetry-php-contrib. No Phalcon package exists there today — the existing src/Instrumentation/ packages cover Symfony, Laravel, Slim, CakePHP, CodeIgniter, Yii, and others, but not Phalcon.

PR already open with a working implementation: https://github.com/open-telemetry/opentelemetry-php-contrib/pull/729 (currently draft).

Summary of the approach

• Hooks Phalcon\Mvc\Application::handle(), Phalcon\Mvc\Micro::handle(), Phalcon\Cli\Console::handle(), and Phalcon\Dispatcher\AbstractDispatcher::dispatch() (as a fallback root, only when none of the other three already started one) so a root span is created regardless of whether the app uses a full MVC Application, a Micro app, a CLI task, or calls the dispatcher directly (e.g. an API-only front controller).
• AbstractDispatcher::callActionMethod() produces one child span per controller action invoked, correctly deduplicated against Dispatcher subclasses that override it and call parent:: internally.
• Requires PHP >= 8.2 (Zend Observer API support for internal/extension-class methods) and Phalcon 5.x.

Start by reviewing the existing packages under src/Instrumentation/ and the draft PR #729, then compare its Phalcon integration with the stated Application, Micro, Console, and Dispatcher entry points. Done means a reviewed auto-instrumentation package covering Phalcon 5.x on PHP >=8.2, with the proposed root and controller-action spans behaving as described.