Add /recent command to show recent game activity

[ashvin2005]

📋 Description

This PR adds a new /recent slash command that displays the 10 most recent players and their game activity, making it easy for users to see who's been playing and how they performed.

✨ Features Added

• 🎮 Recent Players List: Shows the last 10 players who participated in games
• 🏆 Player Stats: Displays scores, win counts for each player
• ⏰ Time Tracking: Shows how long ago each player last played (e.g., "5m ago", "2h ago", "3d ago")
• 🥇 Visual Ranking: Medal emojis (🥇🥈🥉) for the top 3 most recent players
• 🎨 TTC Branding: Consistent embed styling matching the bot's theme
• ⚡ Fast Performance: Uses existing player data storage, no API calls needed

🎯 Use Cases

• See who's been active recently
• Check recent game performances
• Encourage community engagement
• Quick overview of player activity

📝 Files Changed

• commands/recent.js - New command implementation
• commands/README-recent.md - Complete documentation

🧪 Testing

• ✅ Command responds correctly when players exist
• ✅ Handles empty player list gracefully
• ✅ Time formatting works for seconds, minutes, hours, and days
• ✅ Embed displays correctly in Discord
• ✅ Uses existing storage service (no breaking changes)

📸 Example Output

🔧 Technical Details

• Built with Discord.js v14
• Uses ES6 modules (consistent with codebase)
• Integrates with existing storage.js service
• No new dependencies required
• Includes error handling

📚 Documentation

Comprehensive README included covering:

• Feature overview
• Usage instructions
• Implementation details
• Integration guide

🎃 Hacktoberfest 2025

This contribution is part of Hacktoberfest 2025!

✅ Checklist

• Code follows project conventions
• Documentation included
• No breaking changes
• Tested functionality
• ES6 modules format
• Integrates with existing storage system