Refactor components and enhance metrics calculations:

- Update access denied messages to use HTML entities.
- Add autoComplete attributes to forms for better user experience.
- Improve trend calculations in sessionMetrics function.
- Update MetricCard props to accept React nodes for icons.
- Integrate Next.js Image component in Sidebar for optimization.
- Adjust ESLint rules for better code quality.
- Add new properties for trends in MetricsResult interface.
- Bump version to 0.2.0 in package.json.

components/MetricCard.tsx

@@ -4,7 +4,7 @@ interface MetricCardProps {
   title: string;
   value: string | number | null | undefined;
   description?: string;
-  icon?: string;
+  icon?: React.ReactNode;
   trend?: {
     value: number;
     label?: string;