add tip in grpc code start to tell user how it works

[maxandersen]

Description

I tried the grpc code start out just using the cli with quarkus create -x io.quarkus:quarkus-grpc mygrpc and run quarkus dev and it works.

there is no index.html so localhost:8080 gives no info and in the readme.md it just points to https://quarkus.io/guides/grpc-getting-started which
explains how to write this. No indication to user what he can/should do.

Maybe keep index.html ? and add to it and readme.md a mention like:

"This grpc codestart gives you a basic grpc endpoint you can test in the dev ui at /q/dev/io.quarkus.quarkus-grpc/services. The guide at https://quarkus.io/guides/grpc-getting-started explains the code involved.

Implementation ideas

No response

[quarkus-bot]

/cc @cescoffier, @michalszynkiewicz

[michalszynkiewicz]

cc @mkouba

[ia3andy]

to add the index file, you just need this:
https://github.com/quarkusio/quarkus/blob/main/devtools/project-core-extension-codestarts/src/main/resources/codestarts/quarkus/extension-codestarts/resteasy-qute-codestart/base/src/main/resources/META-INF/resources/index.entry.qute.html

and also optionally this if there is a fixed path to reach the service (but I don't think it's the case here):
https://github.com/quarkusio/quarkus/blob/main/devtools/project-core-extension-codestarts/src/main/resources/codestarts/quarkus/extension-codestarts/resteasy-qute-codestart/codestart.yml#L8