gRPC JSON transcoding - msbuild includes proto dependencies

[JamesNK]

Fixes #43376

This PR changes the gRPC JSON transcoding package to:

• Include the required proto dependencies in the NuGet package.
• Adds Microsoft.AspNetCore.Grpc.JsonTranscoding.targets to the NuGet package. It automatically add proto dependencies to Grpc.Tooling protoc compilation.
• Adds a switch <IncludeHttpRuleProtos>true</IncludeHttpRuleProtos> to control adding dependencies. Defaults to false.

This change eliminates the biggest obstacle to setting up gRPC JSON transcoding: acquiring the proto files and placing them in the right location. Now a dev just sets IncludeHttpRuleProtos to true in the csproj 🥳 🎈 🎉

@danmoseley The proto files are under Apache license to Google. I think the entries in https://github.com/dotnet/aspnetcore/blob/main/src/Grpc/THIRD-PARTY-NOTICES covers that license already. Is there other reaction to third-party code that needs to happen?

[JamesNK]

@jtattermusch This is what I discussed in our sync. It works well.

[bemafred]

@JamesNK awesome!

[danmoseley]

@danmoseley The proto files are under Apache license to Google. I think the entries in https://github.com/dotnet/aspnetcore/blob/main/src/Grpc/THIRD-PARTY-NOTICES covers that license already. Is there other reaction to third-party code that needs to happen?

Answered offline, but for others -- we can freely use third party code that is permissively licensed (at least Apache/MIT) but they must appear in a TPN and that TPN must end up packaged in the relevant packages/installers. I know there is some debt wrt the installer/shared frameworks (dotnet/runtime#74779) but our individual packages should be inspected to ensure their TPN goes in.

[zidad]

This is excellent! Can it be back-ported to 7.0 so we don't have to wait until .NET 8.0? ;p

[ghost]

Hi @zidad. It looks like you just commented on a closed PR. The team will most probably miss it. If you'd like to bring something important up to their attention, consider filing a new issue and add enough details to build context.

[tobiashoeft]

Any news to downgrade it to .net 6.0 ?

Or how do i do it in .net 6 try so much ways, but it doesnt work at all

[ghost]

Hi @tobiashoeft. It looks like you just commented on a closed PR. The team will most probably miss it. If you'd like to bring something important up to their attention, consider filing a new issue and add enough details to build context.

[zidad]

@tobiashoeft Yeah I also tried to back port this feature to our own .net 7.0 nuget package but didn't manage to get it working unfortunately.

[ghost]

Hi @zidad. It looks like you just commented on a closed PR. The team will most probably miss it. If you'd like to bring something important up to their attention, consider filing a new issue and add enough details to build context.