Julia implementation using LibCURL

[mkschulze]

Is your feature request related to a problem? Please describe.

There is no production ready native Julia implementation of gRPC yet.

Describe the solution you'd like

In order to have a higher chance of a stable Julia native gRPC implementation, it would be helpful to have support for LibCURL as the HTTP/2 layer in gRPC.
LibCURL.jl will provide HTTP/2 support starting with Julia 1.6 and is part of the stdlib in Julia then.

Describe alternatives you've considered

Wrapping the C core library with https://github.com/JuliaInterop/Clang.jl and starting with #15460

Additional context

We managed to rebuild the gRPC.jl mentioned here #24786, but we don't know in which state it is yet, because we need help with testing.

Related Julia talks are:
Humans-of-Julia/TypeDBClient.jl#19
JuliaWeb/HTTP.jl#328

[stale]

This issue/PR has been automatically marked as stale because it has not had any update (including commits, comments, labels, milestones, etc) for 30 days. It will be closed automatically if no further update occurs in 7 day. Thank you for your contributions!

[mkschulze]

Meanwhile there is a great solution here, it uses native LibCURL: https://github.com/JuliaComputing/gRPCClient.jl