REFACTOR(k8s): reorganize to base/overlays pattern

- Add k8s/base/ with deployment and service
- Add k8s/overlays/prod/ with environment config

deploy/k8s/base/kustomization.yaml

@@ -0,0 +1,15 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+resources:
+  - deployment.yaml
+  - service.yaml
+
+commonLabels:
+  app.kubernetes.io/name: mas
+  app.kubernetes.io/component: platform
+
+images:
+  - name: harbor.mayne.vcn/mas/platform
+    newTag: latest
+