Support nested fields, path segments

grpc-ecosystem / protoc-gen-grpc-gateway-ts

protoc-gen-grpc-gateway-ts is a Typescript client generator for the grpc-gateway project. It generates idiomatic Typescript clients that connect the web frontend and golang backend fronted by grpc-gateway.

Apache License 2.0

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Closes #28

Adds support for 2 related cases in URLs:

Support path segments like in https://google.aip.dev/127, where the URL contains a pattern like post: "/v1/{parent=publishers/*}/books"
Support nested field names in the URL, where the URL is structured like:
```
option (google.api.http) = {
  patch: "/v3/{intent.name=projects/*/locations/*/agents/*/intents/*}"
  body: "intent"
};
```
This gets translated to /v3/${req["intent"]["name"]}

While here, use the newer protoc-gen-go-grpc plugin for generating server test code, due to deprecated usage of plugin=grpc (see https://github.com/protocolbuffers/protobuf-go/releases/tag/v1.20.0#v1.20-grpc-support)

grpc-ecosystem / protoc-gen-grpc-gateway-ts

Support nested fields, path segments #31