feat: add actual render

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

crates/cuddle-clusters/tests/with_vault_secrets/expected/dev/some.yaml

@@ -0,0 +1,39 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  labels:
+    app: service
+  name: service
+spec:
+  replicas: 3
+  selector:
+    matchLabels:
+      app: service
+  template:
+    metadata:
+      labels:
+        app: service
+    spec:
+      containers:
+      - args:
+        - serve
+        command:
+        - service
+        image: kasperhermansen/service:main-1715336504
+        name: service
+        envFrom:
+        - configMapRef:
+            name: service-config
+        env:
+        - name: SOME_KEY
+          valueFrom:
+            secretKeyRef:
+              name: service-vault-secret
+              key: some.key
+        ports:
+        - containerPort: 3000
+          name: external-http
+        - containerPort: 3001
+          name: internal-http
+        - containerPort: 3002
+          name: internal-grpc