feat: add useKeyPress, useKeyCombination, and useKeySequence hooks

[PeterPCW]

Summary

This PR adds three new keyboard interaction hooks to the library.

New Hooks

1. useKeyPress(targetKey, options?)

• Tracks whether a specific key is currently pressed
• Supports single key monitoring with configurable event types
• Useful for keyboard shortcuts, game controls, or modal dismissals

2. useKeyCombination(combo, handler, options?)

• Detects when multiple keys are pressed simultaneously
• Triggers callback when all keys in the combo are pressed
• Perfect for shortcuts like Ctrl+S, Cmd+K, or Ctrl+Shift+E

3. useKeySequence(handler, sequence, options?)

• Detects when a specific sequence of keys is typed in order
• Supports "cheat codes" like Konami code (↑↑↓↓←→←→BA)
• Configurable timeout resets sequence if typing slows

Example Usage

// Single key press
const isPressed = useKeyPress('Escape')

// Key combination
useKeyCombination(['Control', 's'], () => saveDocument())

// Key sequence
useKeySequence('hello', () => showSecretMessage())

Testing

• All hooks include comprehensive unit tests covering:
• Basic functionality
• Event target handling (including null)
• Case-insensitive key matching
• Timeout behavior (for sequences)
• Edge cases

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Latest commit: fb542be

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