Add streaming support

Any plans to add streaming support? For instance if the OpenAPI definition had a response type schema component of type array could the automatically produce a proto RPC that used stream?

E.g. given an OpenAPI definition fragment:

components:
schemas:
FooBar:
type: array
items:
$ref: '#/components/schemas/Bar'

Produces a proto RPC call like:

rpc GetFooBar ( GettFooBarParameters ) returns ( stream FooBar ) {
option (google.api.http) = { post:"/foobar" body:"fooBar" };
}