Persistence

[RedC4ke]

Hi!

We really love how your package streamlines form building, however we've encountered an issue. Sometimes we need to invoke an external intent, which makes the Android Activity susceptible to be destroyed. I've researched the built-in Flutter persistence solutions, but it seems none of them really fit in this case, especially when using multiple subforms.

It would be very appreciated to hear how you guys solve this issue in your company or to get a persistence feature added to leancode_forms, for example using hydrated_bloc.

[KamilSztandur]

Added to the backlog!

Although, we don't want to enforce one specific data storage, but instead to provide nice API to easily parse form data into one JSON and later import such JSON to prefill all fields in the form