cargo: Add missing entries to Cargo.toml

This commit adds missing member entries to the members field in
Cargo.toml.  For this, I have compared the list against
`find . -name Cargo.toml | sort` and entered these results.

Some entries are not able to be included because their Cargo.toml is
explicitly against this, in which cases I added a doc comment.

Fixes #666

Author: cvengler

Cargo.toml

@@ -3,22 +3,37 @@
 members = [
     "rust/account-keys",
     "rust/attest",
+    # Missing "rust/attest/fuzz",
     "rust/bridge/ffi",
     "rust/bridge/jni",
     "rust/bridge/jni/impl",
     "rust/bridge/jni/testing",
     "rust/bridge/node",
+    "rust/bridge/node/futures",
+    "rust/bridge/node/futures/tests-node-module",
+    "rust/bridge/shared",
+    "rust/bridge/shared/macros",
+    "rust/bridge/shared/testing",
+    "rust/bridge/shared/types",
+    "rust/cli-utils",
+    "rust/core",
     "rust/crypto",
     "rust/debug",
     "rust/device-transfer",
     "rust/keytrans",
     "rust/media",
     "rust/message-backup",
+    "rust/message-backup/macros",
     "rust/net",
     "rust/net/chat",
+    "rust/net/grpc",
     "rust/net/infra",
     "rust/poksho",
     "rust/protocol",
+    # Missing "rust/protocol/cross-version-testing",
+    # Missing "rust/protocol/fuzz",
+    "rust/protocol/test-support",
+    "rust/svrb",
     "rust/usernames",
     "rust/zkcredential",
     "rust/zkgroup",