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.

package.json

@@ -21,6 +21,8 @@
     "sync-public-data": "node scripts/sync-public-data.js",
     "import-spielplan": "node scripts/import-spielplan.js",
     "publish-spielplan": "node scripts/publish-imported-spielplan.js",
+    "playstore:assets": "./scripts/playstore-assets.sh",
+    "playstore:anonymize": "./scripts/anonymize-playstore-screenshot.sh",
     "test:watch": "vitest watch",
     "lint": "eslint . --fix"
   },