allow async api methods to return Response<Bytes>

Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>

proxmox-api-macro/src/api_macro.rs

@@ -196,7 +196,6 @@ fn handle_function(
 
     if item.asyncness.is_some() {
         // An async function is expected to return its value, so we wrap it a bit:
-
         body.push(quote! {
             // Our helper type derefs to a wrapper performing input validation and returning a
             // Pin<Box<Future>>.

proxmox-api/src/lib.rs

@@ -317,6 +317,9 @@ unconstrained_api_type! {&str}
 unconstrained_api_type! {String, isize, usize, i64, u64, i32, u32, i16, u16, i8, u8, f64, f32}
 unconstrained_api_type! {Vec<String>}
 
+// Raw return types are also okay:
+unconstrained_api_type! {Response<Bytes>}
+
 // FIXME: make const once feature(const_fn) is stable!
 pub fn get_type_info<T: ApiType>() -> &'static TypeInfo {
     T::type_info()