Create `@h3ravel/events` package for event dispatching and listeners or improve existing one

[3m1n3nc3]

Description

Introduce a standalone @h3ravel/events package to handle event dispatching, listeners, and subscribers across the framework.

This package should be usable independently of HTTP and other H3ravel modules.

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Goals

• Centralize event handling
• Enable async and queued events
• Allow decoupled communication between modules

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Key Features

• Event dispatcher
• Event listener registration
• Subscriber support
• Synchronous and asynchronous dispatch
• Optional queue integration (when available)

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Tasks

• Create @h3ravel/events package
• Define event and listener contracts
• Implement event dispatcher
• Support class-based and function-based listeners
• Add basic tests for dispatching and listening
• Add usage documentation

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Acceptance Criteria

• Events can be dispatched and listened to
• Multiple listeners per event supported
• No dependency on HTTP
• Typed event payloads supported

Difficulty

Intermediate