tendermint-proto: grpc server definitions for rpc/abci

[erwanor]

Partially addresses https://github.com/informalsystems/tendermint-rs/issues/1225. This PR adds gRPC server definitions for the rpc and abci services, but not (yet) for the privval service since it is blocked on #9256 for now. I have added @tony-iqlusion and @tomtau as coauthors since this PR is duplicating work that was previously included-then-yanked from 0.35.

• [x] Referenced an issue explaining the need for the change
• [ ] Updated all relevant documentation in docs
• [x] Updated all code comments where relevant
• [ ] Wrote tests
• [x] Added entry in .changelog/

[codecov-commenter]

Codecov Report

Merging #1338 (0576585) into main (c2b5c9e) will increase coverage by 0.2%. The diff coverage is n/a.

:exclamation: Current head 0576585 differs from pull request most recent head 16f5b5c. Consider uploading reports for the commit 16f5b5c to get more accurate results

@@           Coverage Diff           @@
##            main   #1338     +/-   ##
=======================================
+ Coverage   59.3%   59.5%   +0.2%     
=======================================
  Files        273     272      -1     
  Lines      27095   26973    -122     
=======================================
  Hits       16068   16068             
+ Misses     11027   10905    -122     

Files Changed	Coverage Δ
proto/src/lib.rs	100.0% <ø> (ø)

... and 4 files with indirect coverage changes

:mega: We’re building smart automated test selection to slash your CI/CD build times. Learn more

[erwanor]

Thanks for the review @mzabaluev, I have bumped to tonic@0.9, removed the grpc-client feature, and modified the proto compiler to not generate bindings for the rpc server definitions.

However, I was not able to run the proto compiler as I previously did, so the PR has the old definitions:

⋊> ~/p/t/t/proto-compiler on tendermint-proto/grpc-server-traits ⨯ cargo run                                                                                                                                                                                                                                                                                                                                18:18:00
   Compiling tendermint-proto-compiler v0.3.0 (/Users/user/prod/tendermint-rs/tools/proto-compiler)
    Finished dev [unoptimized + debuginfo] target(s) in 0.88s
     Running `/Users/user/prod/tendermint-rs/tools/target/debug/tendermint-proto-compiler`
[info] => Fetching https://github.com/cometbft/cometbft at v0.34.28 into "/Users/user/prod/tendermint-rs/tools/proto-compiler/../target/tendermint"
  [info] => Cloning https://github.com/cometbft/cometbft into /Users/user/prod/tendermint-rs/tools/proto-compiler/../target/tendermint folder
thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Error { code: -1, klass: 2, message: "could not remove directory '/Users/user/prod/tendermint-rs/tools/target/tendermint/.git/refs/remotes/origin/pierre/fast-prototyping-1059': parent is not directory: Not a directory" }', proto-compiler/src/functions.rs:42:29
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

[mzabaluev]

@erwanor This looks like a weird problem with the local git repository checkout. Try removing target/tendermint and running the compiler again.

There may be changes in the code generated by tonic-build 0.9, so I'd like to be sure the output is checked in.

[mzabaluev]

modified the proto compiler to not generate bindings for the rpc server definitions.

They are still generated, but I have slapped the grpc-server attribute on them. Let's leave it at that, generating everything is simpler.

[erwanor]

Thanks for your help with this, I owe you one!