Add Typing Game type challenge

[Copilot]

Implements a medium-difficulty TypeScript type challenge that validates string equality in the type system, simulating a typing game where users must match a target string exactly.

Challenge Structure

• Number: 35300
• Difficulty: Medium
• Tags: string, game, template-literal

Implementation

Creates standard challenge files:

type TypingGame<Target extends string, Typed extends string> = any

Users implement a type returning true for exact matches, false otherwise.

Test Coverage

17 test cases covering:

• Exact matches vs partial/incorrect input
• Case sensitivity
• Empty strings
• Special characters and spaces
• Length validation

type Result1 = TypingGame<'hello', 'hello'>  // true
type Result2 = TypingGame<'hello', 'hel'>    // false (incomplete)
type Result3 = TypingGame<'Hello', 'hello'>  // false (case-sensitive)

The challenge tests understanding of conditional types and template literal type operations for string comparison.

Original prompt

---

This section details on the original issue you should resolve

<issue_title>A typing game.</issue_title>
<issue_description></issue_description>

<agent_instructions>It is an option.</agent_instructions>

Comments on the Issue (you are @copilot in this section)

• Fixes A typing game. #4

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