Parse QR Code into data objects

Returns either:

• {:ok, objects} where objects is a list of Exemvi.MP.Object structs
• {:error, reasons} where reasons is a list of error reasons as atoms

Validate data objects

Returns either:

• {:ok, objects} where objects is the objects originally supplied to the function
• {:error, reasons} where reasons is a list of validation error reasons as atoms

Validate whole QR Code

Returns either:

• {:ok, qr_code} where qr_code is the QR Code orginally supplied to the function
• {:error, reasons} where reasons is a list of validation error reasons as atoms