api: node/apt: add versions call

very basic, based on API/concepts of PVE one.

Still missing, addint an extra_info string option to APTUpdateInfo
and pass along running kernel/PBS version there.

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>

src/api2/types/mod.rs

@@ -1153,7 +1153,7 @@ pub enum RRDTimeFrameResolution {
 }
 
 #[api()]
-#[derive(Debug, Serialize, Deserialize)]
+#[derive(Debug, Clone, Serialize, Deserialize)]
 #[serde(rename_all = "PascalCase")]
 /// Describes a package for which an update is available.
 pub struct APTUpdateInfo {