please add gRPC ability

gRPC adoption grows including on [Postman](https://grpc.io/blog/postman-grpcweb/) and world adoption on 20% usage most on Google Go ecosystem, but not only and grows and maybe also _Rust_ make it dominance a reality(_on Windows not so wanted, but wide ecosystem even for system programming packages_), but JavaScript is reality on cloud streaming providers [for a long time](https://grpc.io/blog/grpc-js-1.0/)..., _and even c++ streaming could happen in theory of template conference download for malicious cheaters._

Now there is https://github.com/grpc/grpc-web as some abstraction and now there is also Microsft love initiative https://grpc.io/blog/grpc-on-dotnetcore/, so it should be in future maybe enabled by default, but some tools are maybe required not only Chrome/Edge DevTools but also [network issues](https://grpc.io/blog/wireshark/) and regulations or abilities... https://grpc.io/blog/grpc-web-interceptor/ and a lot of is happening on Conferences [worlds](https://events.linuxfoundation.org/grpc-conf/program/schedule/)... like for [2024](https://grpcconf2024.sched.com/)

So please make some addititions for your roadmap and also maybe some healthy setup, but it is maybe difficult in the CORS(not only) world and SPACE...

まず、リポジトリの説明と、リンクされている gRPC-Web、.NET、Wireshark、interceptor のリファレンスを読んで、要求されている機能を定義します。Issue にはファイル、エントリポイント、テスト、受け入れ基準が記載されていないため、実装前にスコープと Definition of Done を明確にする必要があります。

索引モデルが issue の本文から書いたものです。