Improve kustomization usage

Ensure that the `manifest/base` folder can be used as a standalone
kustomization resource.

Add a new subfolder `manifest/gpu` which uses `manifest/base` with
additional GPU related patches.

kubernetes/manifest/base/kustomization.yaml

@@ -0,0 +1,8 @@
+resources:
+  - open-webui.yaml
+  - ollama-service.yaml
+  - ollama-statefulset.yaml
+  - webui-deployment.yaml
+  - webui-service.yaml
+  - webui-ingress.yaml
+  - webui-pvc.yaml

kubernetes/manifest/gpu/kustomization.yaml

@@ -0,0 +1,8 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+resources:
+  - ../base
+
+patches:
+- path: ollama-statefulset-gpu.yaml

kubernetes/manifest/kustomization.yaml

@@ -1,13 +0,0 @@
-resources:
-- base/open-webui.yaml
-- base/ollama-service.yaml
-- base/ollama-statefulset.yaml
-- base/webui-deployment.yaml
-- base/webui-service.yaml
-- base/webui-ingress.yaml
-- base/webui-pvc.yaml
-
-apiVersion: kustomize.config.k8s.io/v1beta1
-kind: Kustomization
-patches:
-- path: patches/ollama-statefulset-gpu.yaml