Setup endpoints

[arthurgrykhno]

1. List all users in db (by filter, using pagination and sorting)
2. Remove or mark user as inactive
3. Send user promo code (add to user new filed - promocodes)
4. Add/delete/update every entity
5. User endpoint to fill cart with items
6. Confirm transaction and write off items from storage (make validation to check avail quantity)
7. Add to user new collection called orders (it will contain all orders, like history)

[leroydemon]

• dto
• general repo
• storage logic