feat: Correct Serialization of google::protobuf::*Value Types

[rise0chen]

Warn: BytesValue can't work

[tustvold]

Looks good to me, what was the reason for not adding BytesValue?

[rise0chen]

BytesValue contain prost::bytes::Bytes, It can't serializa

[tustvold]

We have working plumbing for serializing bytes - https://github.com/influxdata/pbjson/blob/main/pbjson-test/protos/syntax3.proto#L75. The key is to base64 encode/decode it

In particular

• https://github.com/influxdata/pbjson/blob/main/pbjson/src/lib.rs#L57
• https://github.com/influxdata/pbjson/blob/main/pbjson-build/src/generator/message.rs#L272
• https://github.com/influxdata/pbjson/blob/main/pbjson-build/src/generator/message.rs#L818

[tustvold]

I'm going to get this in, thank you 👍

Feel free to open a follow up PR to add BytesValue support if you would like to 😄