Integration with spring security

[kenix]

Since I didn't find any security related mentioning, kindly ask, if and when there is this support:

1. security integration for gRPC service
2. security integration for gRPC HTTP transcoding

If there is already such kind of support, much appreciated for some links to examples.

[DanielLiu1123]

Right now, there’s no support for Spring Security, but I’m considering adding it.