v1.4.0 - GeeksforGeeks, HackerRank & Duolingo Telemetry

What's New in v1.4.0 🚀

• 🌿 GeeksforGeeks Telemetry Card (\gfg-card.svg): Total solved, School/Basic, Easy, Medium, Hard breakdown with color progression bar, coding score, and POTD streaks.
• 🎖️ HackerRank Achievements Card (\hackerrank-card.svg): Level, country, domain badges with earned stars (★), and solved challenge counts.
• 🦉 Duolingo Learning Streak Card (\duolingo-card.svg): Daily streak count (🔥), total XP (⚡), active learning languages, and course progress.
• 🎨 Full Customization Across All Cards: Themes, transparent glassmorphism, border radius, and custom palettes.
• 💻 CLI & Action Support: Added --gfg, --hackerrank, --duolingo\ flags and action inputs.