Added size constraints to Create Wallet API requests

The Create Wallet API request structure now enforces explicit size constraints for the following fields:

• address.address_1 must have size between 1 and 255 characters
• address.address_2 must have size between 0 and 255 characters
• address.city must have size between 1 and 40 characters
• address.state must have size of 2 characters
• address.postal_code must have size between 1 and 10 characters
• address.country must have size of 2 characters
• first_name must have size between 1 and 40 characters
• middle_name must have size between 0 and 40 characters
• last_name must have size between 1 and 40 characters
• email must have size between 1 and 255 characters