feat(storefront): update FAQ and legal documentation

- Added new FAQ sections for account security, ordering and checkout, returns, shipping, and contact information.
- Introduced legal documents including privacy policy, terms of service, data protection, and general terms and conditions.
- Updated package dependencies to include gray-matter and remark-gfm for enhanced markdown support.

apps/storefront/content/legal/data-protection.md

@@ -0,0 +1,25 @@
+---
+title: Data Protection
+description: The Pet Loft data protection and GDPR information.
+lastUpdated: March 2025
+---
+
+## Data controller
+
+The Pet Loft is the data controller for the personal data we process in connection with our website and orders.
+
+## Legal basis for processing
+
+We process your data where necessary to perform our contract with you (e.g. fulfilling orders), where required by law, and where we have a legitimate interest (e.g. improving our services), in line with applicable data protection law.
+
+## Retention
+
+We retain your data only for as long as necessary to fulfil the purposes set out in our Privacy Policy and to comply with legal obligations.
+
+## International transfers
+
+If we transfer your data outside the UK or EEA, we ensure appropriate safeguards are in place as required by law.
+
+## Complaints
+
+You have the right to lodge a complaint with a supervisory authority if you believe our processing of your data infringes applicable law.