feat: ✨ implemented pwa capabillities and refactored lots of backend things

web/public/manifest.json

@@ -0,0 +1,19 @@
+{
+    "name": "GeoTracker",
+    "short_name": "GeoTracker",
+    "description": "GPX File visualizer",
+    "icons": [
+        {
+        "src": "/vite.svg",
+        "type": "image/svg"
+        }
+    ],
+    "start_url": "/",
+    "display": "standalone",
+    "background_color": "#ffffff",
+    "theme_color": "#4CAF50",
+    "orientation": "portrait",
+    "scope": "/",
+    "id": "/",
+    "lang": "de-DE"
+}