feat: add grpc server streaming adapter

crates/crank-adapter-grpc/src/error.rs

@@ -18,8 +18,10 @@ pub enum GrpcAdapterError {
     MethodNotFound { service: String, method: String },
     #[error("grpc method path is invalid for service {service} and method {method}")]
     InvalidMethodPath { service: String, method: String },
-    #[error("grpc method {service}/{method} is not unary")]
+    #[error("grpc method {service}/{method} is not supported for unary execution")]
     UnsupportedMethodKind { service: String, method: String },
+    #[error("grpc method {service}/{method} does not support server-stream execution")]
+    UnsupportedStreamingMethodKind { service: String, method: String },
     #[error("invalid metadata key {key}")]
     InvalidMetadataKey {
         key: String,
@@ -34,6 +36,8 @@ pub enum GrpcAdapterError {
     },
     #[error("transport endpoint is invalid")]
     InvalidEndpoint(#[from] tonic::transport::Error),
+    #[error("stream collection window expired before grpc stream completed")]
+    WindowExpired,
     #[error("grpc status {code}: {message}")]
     Status { code: Code, message: String },
 }