Support for serde_json::RawValue

[luke-biel]

It seems that there's no support for serde_json::value::RawValue, which seems a bit odd.

error[E0277]: the trait bound `serde_json::value::RawValue: JsonSchema` is not satisfied
    |
62  |         component: Box<RawValue>,
    |                    ^^^ the trait `JsonSchema` is not implemented for `serde_json::value::RawValue`
    |
    = note: required because of the requirements on the impl of `JsonSchema` for `Box<serde_json::value::RawValue>`

[ralpha]

It indeed seems to be missing.
https://github.com/GREsau/schemars/blob/master/schemars/src/json_schema_impls/serdejson.rs

PR is welcome.

[ahl]

What would you expect that JSON schema to be for RawValue? Same as Value?

[luke-biel]

@ahl Yes, my assumption is that it would work same as Value.

[gahag-cw]

+1