DeMLS Integration (#134)

* Add WakeupService

* Move Id to trait

* Add GroupV2

* Add convo cache

* Add TestHarness

* Instrument call paths

* Downgrade Ciphersuite

* Update imports

* cleanups

* Add Wakeups to Client

* fix: protoc dependency for ci

* fix: nix hash

* Remove save_conversation for v2

* PR comments

.github/workflows/ci.yml

@@ -18,6 +18,8 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - run: rustup update stable && rustup default stable
+      # hashgraph-like-consensus's build.rs shells out to protoc via prost-build.
+      - run: sudo apt-get update && sudo apt-get install -y protobuf-compiler
       # chat-cli's build.rs unconditionally links liblogosdelivery and requires
       # LOGOS_DELIVERY_LIB_DIR. The smoketest job builds and exercises it under
       # Nix; here we keep the toolchain-only job fast by skipping it.
@@ -31,6 +33,8 @@ jobs:
       - uses: actions/checkout@v4
       - run: rustup update stable && rustup default stable
       - run: rustup component add clippy
+      # hashgraph-like-consensus's build.rs shells out to protoc via prost-build.
+      - run: sudo apt-get update && sudo apt-get install -y protobuf-compiler
       - run: cargo clippy --all-targets --all-features --workspace --exclude chat-cli -- -D warnings
 
   fmt: