Cart, orders, order management, customer bank data management

• Added cart
• Added order creation
• Added order management at warehouses
• Added customer banking data and management
• Added customer address management

Catalogue and product page

• Added catalogue of products
• Added product page (for client access)
• Added error pages
• Little refactorings and fixes

MVP Prerelease

First prerelease of Skladlain-Frontend

Added functionality:

• Authentication using JWT tokens with ability to refresh them
• Role-based authorization using localStorage
• Dynamically formed navbar based on user roles
• Personal cabinet and signin/signup forms