Add key_typed usage example

[Osaid2993]

Description

Splashkit Function: key_typed

Overview of example functionality: This example demonstrates how to use the key_typed function. It opens a window and tracks how many times the A, Space, and Enter keys are typed. The counters update on screen each time one of those keys are pressed, showing that key_typed only triggers once per key press, not continuously while the key is held down.

Example Output:

Files Included

• C++ code
• C# code (Top-Level statements)
• C# code (Object-Oriented Programming)
• Python code
• Relevant title for the example (.txt)
• Screenshot

Usage Example Checks (READ CAREFULLY)

• Code uses Splashkit function above
• Code does not use non-Splashkit functions
• Code does not use extra function declarations or extra classes
• Code does not violate any of the Thoth Tech SplashKit Style Guide rules
• Simple, clear demonstration of the function
• Tested in Chrome and Firefox

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