Barcodes field is ignored

[suzukieng]

Issue summary

The non-legacy barcodes field is ignored, while the barcode field works.

Expected behaviour

The barcodes field should result in JSON output corresponding to:
https://developer.apple.com/documentation/walletpasses/pass/barcodes

Actual behaviour

When using the barcodes field and setting it to a list of Barcode objects, its content are ignored.

In the code, there are comments regarding barcode being a legacy field and to use barcodes instead, but apparently it is unhandled, see:

applepassgenerator/src/applepassgenerator/models.py

Line 400 in 52e1db1

# barcodes have 2 fields, 'barcode' is legacy so limit it to the legacy formats, 'barcodes' supports all

Steps to reproduce the problem

1. Create a pass and set the barcodes field to a list of Barcode
2. Build/sign the pass
3. Observe that in the json no barcode output is generated

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Checklist

• [ x ] I have searched the issues of this repo and believe that this is not a duplicate.