Add sitemap.xml and robots.txt for SEO optimization

app.py

@@ -503,6 +503,12 @@ def api_docs():
     response = make_response(render_template('swagger.html'))
     return add_cache_headers(response)
 
+@app.route('/sitemap.xml')
+def sitemap():
+    """Serviert die Sitemap für Suchmaschinen"""
+    from flask import send_file
+    return send_file('sitemap.xml', mimetype='application/xml')
+
 
 if __name__ == '__main__':
     app.run(debug=True, host="0.0.0.0")