feat: Complete Mail Composer with EmailJS integration

- Rich email composer with formatting tools (bold, italic, underline, links)
- Multi-recipient support (To, CC, BCC fields)
- File attachments with drag & drop support
- Priority levels and email validation
- Draft management with auto-save and cloud sync
- Real email sending via EmailJS integration
- Responsive design for mobile and desktop
- Comprehensive error handling and fallback modes
- Complete documentation and setup guides
- Firebase integration ready for advanced features

Features:
✅ Real email sending (EmailJS)
✅ Rich text editor
✅ File attachments
✅ Draft management
✅ Form validation
✅ Responsive UI
✅ Error handling
✅ Documentation

.gitignore

@@ -0,0 +1,57 @@
+# Dependencies
+node_modules/
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Build outputs
+dist/
+build/
+
+# Environment variables
+.env
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+
+# IDE files
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# OS generated files
+.DS_Store
+.DS_Store?
+._*
+.Spotlight-V100
+.Trashes
+ehthumbs.db
+Thumbs.db
+
+# Logs
+logs
+*.log
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Coverage directory used by tools like istanbul
+coverage/
+
+# Firebase
+.firebase/
+firebase-debug.log
+firebase-debug.*.log
+
+# Vite
+.vite/
+
+# Temporary files
+*.tmp
+*.temp