Simple hangman challenge

[jlahtinen]

This pull request introduces a comprehensive setup and implementation for a Hangperson (Hangman) Java console application. It includes detailed instructions for creating the project, configuring Maven, and leveraging GitHub Copilot for incremental development. The changes also include a complete solution with the game logic, tests, and supporting documentation.

Documentation and Setup Improvements:

• Added a detailed README.md file in challenges/hangperson with step-by-step instructions for setting up the Hangperson application using Maven and GitHub Copilot. It covers project creation, dependency configuration, and initial implementation guidance.
• Included a wordet.md file documenting the use of WordNet for word resources, along with its licensing details.

Game Implementation:

• Implemented the main game logic in App.java, including a loop for guessing letters, tracking incorrect guesses, and determining win conditions. The game now supports repeated guesses until the word is fully guessed.

Testing and Maven Configuration:

• Added a basic JUnit 5 test class AppTest.java to validate the application setup.
• Created a pom.xml file to configure Maven for Java 1.8, JUnit 5, and the Maven Surefire plugin for testing.

Supporting Changes:

• Updated .gitignore to exclude the target directory, ensuring build artifacts are not tracked.
• Added prompts in prompts.md to guide developers in using GitHub Copilot for incremental game development.

This pull request provides a solid foundation for the Hangperson application, with clear documentation and modular implementation to support further enhancements.