Aidan/support unknown fields #151
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This is not intended to go in as is, but is some work I started to support a possible upcoming feature that I've been using in a project.
The feature adds unknown field tracking as an option to prost, and does so by adding a public struct member with a configurable name. To make pbjson work correctly with this change, pbjson must be updated to set that struct field to default when constructing.
Protobuf JSON does not maintain unknown fields, so there's no work to do in parsing or data management, just a configurable option that a user can use to set the field they are using with their prost generated code.
I enabled it for testing, and everything passed.
Another option is to just add a boolean
unknown_field_support, and then generate a..Default::default()for the struct creation.