Update dashboard metrics and session handling

- Refactor DashboardContent to improve trend calculations for user metrics and session time.
- Modify SessionViewPage to ensure loading state is set before fetching session data.
- Adjust SessionsPage to clean up display of session start time and remove unnecessary comments.
- Enhance DonutChart to handle various data point types and improve percentage calculations.
- Update GeographicMap to utilize @rapideditor/country-coder for country coordinates.
- Improve safeParseDate function in csvFetcher for better date handling and error logging.
- Refactor sessionMetrics to clarify variable names and improve session duration calculations.
- Update next.config.js for better configuration clarity.
- Bump package version to 0.2.0 and update dependencies in package.json and package-lock.json.
- Clean up API handler for dashboard sessions to improve readability and maintainability.
- Adjust tsconfig.json for better module resolution and strict type checking.

next.config.js

@@ -1,4 +1,6 @@
-/** @type {import('next').NextConfig} */
+/**
+ * @type {import('next').NextConfig}
+ **/
 const nextConfig = {
   reactStrictMode: true,
   // Allow cross-origin requests from specific origins in development