feat: add replicas

Signed-off-by: kjuulh <contact@kjuulh.io>

crates/cuddle-clusters/src/catalog/cluster_vars.rs

@@ -17,6 +17,7 @@ pub struct ClusterVariables {
     env: ClusterEnv,
     name: String,
     namespace: String,
+    replicas: u64,
 }
 
 #[derive(Default)]
@@ -36,7 +37,10 @@ impl Component for ClusterVars {
         environment: &str,
         value: &serde_yaml::Value,
     ) -> Option<anyhow::Result<minijinja::Value>> {
-        let mut vars = ClusterVariables::default();
+        let mut vars = ClusterVariables {
+            replicas: 3,
+            ..Default::default()
+        };
 
         // TODO: actually extract values
 
@@ -52,6 +56,12 @@ impl Component for ClusterVars {
                     }
                 }
             }
+
+            if let Some(replicas) = mapping.get("replicas") {
+                if let Some(replicas) = replicas.as_u64() {
+                    vars.replicas = replicas;
+                }
+            }
         }
 
         vars.name = environment.into();
@@ -67,6 +77,7 @@ impl minijinja::value::Object for ClusterVariables {
             "env" => minijinja::Value::from_object(self.env.clone()),
             "name" => minijinja::Value::from_safe_string(self.name.clone()),
             "namespace" => minijinja::Value::from_safe_string(self.namespace.clone()),
+            "replicas" => minijinja::Value::from_safe_string(self.replicas.to_string()),
             _ => return None,
         };