🎨 Palette: [UX improvement] Add ANSI colors and emojis to NumberGuess CLI

[EiJackGH]

💡 What:
Added ANSI color codes and emojis to the NumberGuess/NumberGuess.cpp terminal application to visually distinguish headers, hints, errors, and success states. Replaced the Windows-specific system("pause") with standard C++ cin.ignore() and cin.get() functions for cross-platform compatibility.

🎯 Why:
CLI output without visual markers can be difficult to quickly scan. Adding colors (red for errors/too high, yellow for hints/too low, green for success) significantly reduces cognitive load and provides more intuitive, instant feedback. Replacing the system("pause") function fixes a major usability issue for non-Windows users where the app would error out instead of cleanly exiting.

📸 Before/After:
Before:

--- EI-JACK LAB: NUMBER GUESSER V1.0 ---
I'm thinking of a number between 1 and 100.
(Hint: Type 'zen' to see the credits)

Enter your guess: 50
>>> Too high! Try again.

After:

╔════════════════════════════════════════╗
║ 🎮 EI-JACK LAB: NUMBER GUESSER V1.0 🎮 ║
╚════════════════════════════════════════╝
🤔 I'm thinking of a number between 1 and 100.
(Hint: Type 'zen' to see the credits)

➡️ Enter your guess: 50
📉 Too high! Try again.

♿ Accessibility:
Improves readability and cognitive accessibility of the terminal output by using distinct visual indicators (both color and shape/iconography via emojis) to communicate application state rather than relying on plain text alone.

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PR created automatically by Jules for task 15076418466540573917 started by @EiJackGH

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