New API to populate raw Common Schema 4.0 fields

[maxgolov]

There are several fields that cannot be currently populated by SDK. Example:

• ext.app.env
• ext.container
• etc.

Feature request:

• add new CS4.0 fields definition and regenerate the C++ bond-related code
• introduce a generic schema mapping mechanism that would allow to expose any new CS protocol field via SetProperty and SetContext API to the app caller

Request comes from MS Edge team.

[maxgolov]

This is also identical to MS Edge team ask "CS 3.0: Need a general method for updating all CS 3.0 optional fields." tracked under Task 22164965.