feat: add shared API operation metadata macro

crates/api-macros/tests/ui/unsupported_wire_kind.rs

@@ -0,0 +1,12 @@
+use api_macros::api;
+
+pub struct StreamRequest;
+pub struct Response;
+
+#[api]
+pub trait UnsupportedWireKind {
+    #[post("/widgets")]
+    async fn create(&self, #[stream] request: StreamRequest) -> Response;
+}
+
+fn main() {}