Update: improve Hangman game with categories, scoring, colors, input

[Felipecardosovargas]

Description

This PR improves the Hangman game as requested in issue #88.
It adds word categories with difficulty levels, a scoring system, colorful console output, input validation, display of guessed letters, and a replay feature.

Type of Change

• New feature
• Bug fix
• Documentation
• Code refactoring
• Testing

Changes Made

• Added WORD_CATEGORIES dictionary with multiple categories and difficulty levels
• Implemented make_guess function and scoring system
• Enhanced play_game with colored output, input validation, guessed letters display, and replay option
• Separated code into modular files: main.py, game.py, words.py, hangman_pics.py

Testing

• Tested multiple games with different categories and difficulties
• Verified scoring system and letter validation
• Checked replay functionality

Screenshots (if applicable)

N/A (console-based game)

Checklist

• My code follows the style guidelines
• I have tested my code
• I have added documentation where necessary
• My changes generate no new warnings
• I have added tests (if applicable)

Related Issues

Closes #88