feat(gotify): add new app

apps/gotify/base/kustomization.yaml

@@ -0,0 +1,18 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+resources:
+  - ns.yaml
+
+images:
+  - name: gotify/server
+    newName: ghcr.io/gotify/server
+    newTag: 2.7.3
+
+helmCharts:
+  - name: gotify
+    repo: https://pmoscode-helm.github.io/gotify/
+    version: 0.6.2
+    namespace: gotify-system
+    releaseName: gotify
+    valuesFile: helm-values.yaml