[BUG] Fix breaking changes with source of truth

[digitalbuddha]

Store 4 had a source of truth that can write one type and read another. During some work adding mutable store, we broke that contract. I'll be adding the functionality back, it was an unintentional oversight

[digitalbuddha]

Starting looking at it. This work should be completed by end of week. The goals are to push ant converter and local data type logic down to multable store apis leaving non mutable stores as binary compatibile with old

[digitalbuddha]

This is what I was thinking...cc @matt-ramotar

Operation	Store	MutableStore
Write	network	network OR output
Read	output	output

Need a way to convert output back to network or have a common type for writing

With a common type called Local and a converter construct
interface Converter<Network : Any, Output : Any, Local : Any>

Operation	Store	MutableStore
Write	network.toLocal	network.toLocal OR output.toLocal
Read	output	output

Effectively store will have a dummy converter that has same type for network and local for example
DummyConverter<Network, Output>(): Converter<Network, Output, Network>

Mutable store has a converter that needs to know how to go from network to local or from output to local
Source of truth will know how to write a local or read an output

Store never needs to know how to convert local to output, if user has same local read and write they would set local and output type to be same

Builders will hide all the generic mess :-)

Froma functionality perspective users will be able to:

• Create a store with different read and write types
• Create a store with same read write types
• Create a mutable store with same read and write types
• Create a mutable store with different read and write types
• Have ability to write locally

Thoughts @matt-ramotar ?

[matt-ramotar]

SGTM 👍🏽

[SteinerOk]

Hey @digitalbuddha, any ETA for this release?
I want to migrate from v4 to v5, but cannot via this bug(

[digitalbuddha]

There is a snapshot available now, we are targeting next week for a beta01 release. Thank you for patience, I'm old and commit to too many things 😅

[jsilva05]

Hi!
Any news on the new release?
Thanks!

[digitalbuddha]

https://github.com/MobileNativeFoundation/Store/releases/tag/5.0.0-beta02 Is out