Add CasaOS reset username and password

reset-password-for-casaos/README.md

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+# Run command
+
+```bash
+bash -c "$(wget -qLO - https://raw.githubusercontent.com/bigbeartechworld/big-bear-scripts/master/reset-password-for-casaos/run.sh)"
+```

reset-password-for-casaos/run.sh

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+#!/bin/bash
+
+# Prompt user for confirmation
+read -p "Do you want to reset your CasaOS username and password? (y/n): " response
+
+if [[ "$response" != "y" ]]; then
+    echo "Please try resetting the username and password first."
+    exit 1
+fi
+
+# Check if user.db exists
+if [[ ! -f /var/lib/casaos/db/user.db ]]; then
+    echo "user.db does not exist. Exiting."
+    exit 1
+fi
+
+# Backup user.db
+sudo mv /var/lib/casaos/db/user.db /var/lib/casaos/db/user.db.backup
+
+# Restart casaos-user-service
+sudo systemctl restart casaos-user-service.service
+
+echo "Commands executed successfully. Visit CasaOS UI again and the welcome screen should present to reset password."