feat: upgrade to capacitor 5.0

frontend/app/capacitor.config.ts

@@ -4,7 +4,6 @@ const config: CapacitorConfig = {
   appId: 'de.anyschool.app',
   appName: 'StApps',
   webDir: 'www',
-  bundledWebRuntime: false,
   cordova: {
     preferences: {
       'AndroidXEnabled': 'true',
@@ -14,18 +13,9 @@ const config: CapacitorConfig = {
   },
   plugins: {
     SplashScreen: {
-      launchShowDuration: 6000,
       launchAutoHide: false,
-      backgroundColor: '#ffffff',
-      androidSplashResourceName: 'splash',
-      androidScaleType: 'FIT_CENTER',
+      backgroundColor: '#3880ff',
       showSpinner: false,
-      androidSpinnerStyle: 'large',
-      iosSpinnerStyle: 'small',
-      spinnerColor: '#999999',
-      splashFullScreen: false,
-      splashImmersive: false,
-      useDialog: false,
     },
     LocalNotifications: {
       // TODO