feat: Initial implementation of FitTrack Report Generator

This commit introduces the initial version of the FitTrack Report Generator, a FastAPI application for analyzing workout files.

Key features include:
- Parsing of FIT, TCX, and GPX workout files.
- Analysis of power, heart rate, speed, and elevation data.
- Generation of summary reports and charts.
- REST API for single and batch workout analysis.

The project structure has been set up with a `src` directory for core logic, an `api` directory for the FastAPI application, and a `tests` directory for unit, integration, and contract tests.

The development workflow is configured to use Docker and modern Python tooling.

examples/GarminSync/garminsync/web/static/utils.js

@@ -0,0 +1,56 @@
+// Utility functions for the GarminSync application
+
+class Utils {
+    // Format date for display
+    static formatDate(dateStr) {
+        if (!dateStr) return '-';
+        return new Date(dateStr).toLocaleDateString();
+    }
+    
+    // Format duration from seconds to HH:MM:SS
+    static formatDuration(seconds) {
+        if (!seconds) return '-';
+        const hours = Math.floor(seconds / 3600);
+        const minutes = Math.floor((seconds % 3600) / 60);
+        const secondsLeft = seconds % 60;
+        return `${hours}:${minutes.toString().padStart(2, '0')}:${secondsLeft.toString().padStart(2, '0')}`;
+    }
+    
+    // Format distance from meters to kilometers
+    static formatDistance(meters) {
+        if (!meters) return '-';
+        return `${(meters / 1000).toFixed(1)} km`;
+    }
+    
+    // Format power from watts
+    static formatPower(watts) {
+        return watts ? `${Math.round(watts)}W` : '-';
+    }
+    
+    // Format heart rate (adds 'bpm')
+    static formatHeartRate(hr) {
+        return hr ? `${hr} bpm` : '-';
+    }
+    
+    // Show error message
+    static showError(message) {
+        console.error(message);
+        // In a real implementation, you might want to show this in the UI
+        alert(`Error: ${message}`);
+    }
+    
+    // Show success message
+    static showSuccess(message) {
+        console.log(message);
+        // In a real implementation, you might want to show this in the UI
+    }
+    
+    // Format timestamp for log entries
+    static formatTimestamp(timestamp) {
+        if (!timestamp) return '';
+        return new Date(timestamp).toLocaleString();
+    }
+}
+
+// Make Utils available globally
+window.Utils = Utils;