Persist Budget

[leo-benz]

The values entered to the budgeted field shall be persisted across application launches.

[Xiphe]

Do you plan compatibility with the current format? (json with .budget extension).

I can specify the current structure and my thoughts behind that if that helps.

[leo-benz]

I am not sure about it yet. Probably trying to ensure compatibility will increase complexity compared to built in swift serialisation methods. Especially also when thinking about future implementations of iCloud Sync.

Importing budgets from the current format is definitely a must have.

[Xiphe]

Makes sense 👍

[leo-benz]

Follow up for importing existing budgets in #32