feat: add serialize and deserialize for manifest

crates/nocontrol/tests/mod.rs

@@ -1,7 +1,7 @@
 use async_trait::async_trait;
 use nocontrol::{
     manifests::{Manifest, ManifestMetadata, ManifestState},
-    Operator,
+    Operator, Specification,
 };
 use serde::{Deserialize, Serialize};
 use tracing_test::traced_test;
@@ -80,11 +80,19 @@ impl Operator for MyOperator {
     }
 }
 
-#[derive(Clone, Serialize)]
+#[derive(Clone, Serialize, Deserialize)]
 pub enum Specifications {
     Deployment(DeploymentControllerManifest),
 }
 
+impl Specification for Specifications {
+    fn kind(&self) -> &'static str {
+        match self {
+            Specifications::Deployment(_) => "deployment",
+        }
+    }
+}
+
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct DeploymentControllerManifest {
     name: String,