Decouple native-form & core for form config work

[ekigamba]

• Create a library/repo that will hold the form config work, utils & contracts shared between native-form & core
• Use interfaces in the extra repo
• Import the new library into core & native-form
• Implement the interfaces in core & native-form
• Bootstrap native form -> Native form will have a new NativeFormLibrary class in which the implementations will be injected
• Implement the NativeFormLibrary bootstrapping in the client apps
  The name of the lib will be called utils

This library will contain contracts, utils, interfaces

[dubdabasoduba]

Related issues
Client core #572 & #573
Native forms #435 & #436
ANC #527
Reveal #794