feat: add Datenschutzerklärung and Konto löschen pages

- Created datenschutz.vue for the privacy policy with sections on data protection, responsible entity, data processing, rights, and contact information.
- Created konto-loeschen.vue for account deletion requests, detailing the process, affected data, and processing time.
- Added anonymize-playstore-screenshot.sh script for image anonymization using ImageMagick.
- Introduced playstore-assets.mjs for generating Play Store assets, including icons and feature graphics, using sharp.
- Added playstore-assets.sh script to execute the asset generation script.

scripts/anonymize-playstore-screenshot.sh

@@ -0,0 +1,32 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+if [[ $# -lt 3 ]]; then
+  echo "Nutzung: $0 <input.png> <output.png> <rects>"
+  echo "rects Format: x,y,w,h;x,y,w,h"
+  echo "Beispiel: $0 shot.png shot-anon.png '80,120,420,70;72,720,540,90'"
+  exit 1
+fi
+
+INPUT="$1"
+OUTPUT="$2"
+RECTS="$3"
+
+if ! command -v magick >/dev/null 2>&1; then
+  echo "Fehler: 'magick' (ImageMagick) ist nicht installiert."
+  exit 1
+fi
+
+TMP="$OUTPUT.tmp.png"
+cp "$INPUT" "$TMP"
+
+IFS=';' read -r -a BOXES <<< "$RECTS"
+for box in "${BOXES[@]}"; do
+  IFS=',' read -r x y w h <<< "$box"
+  magick "$TMP" \
+    \( -size "${w}x${h}" xc:black -alpha set -channel a -evaluate set 70% +channel \) \
+    -geometry "+${x}+${y}" -composite "$TMP"
+done
+
+mv "$TMP" "$OUTPUT"
+echo "Anonymisierte Datei geschrieben: $OUTPUT"