⬆️ Upgrade Angular to version 21
🎨 Moved away from Eslint & Prettier to go with Oxlint, 100x faster than ESlint and Oxfmt, 30x faster than Prettier
🎨 Added better & smarter linter rules
🤖 Added AI guidelines for Agents, Gemini, Claude Code, Cursor and Copilot
🧹 Clean-up unused dependencies
📱 Updated VSCode recommended extensions