feat: migrate to artifactapi 3+ (#197)

What changed:
- Adds new v3 API and UI deployments (separate api-deployment.yaml, ui-deployment.yaml) alongside the existing monolithic artifactapi-deployment.yaml
- Adds CNPG PostgreSQL cluster + pooler to replace the standalone postgres deployment
- Adds new api-env configmap, new Vault secrets (postgres-credentials, environment), and a second VaultAuth (default1)
- Adds new services targeting the split api and ui selectors
- Adds HPAs for both new deployments
- Updates kustomization to include all new resources

---------

Co-authored-by: Ben Vincent <ben@unkin.net>
Reviewed-on: #197

apps/base/artifactapi/kustomization.yaml

@@ -5,16 +5,28 @@ kind: Kustomization
 resources:
   - artifactapi-deployment.yaml
   - artifactapi-hpa.yaml
-  - configmap.yaml
   - httproute.yaml
+  - postgres-deployment.yaml
+  - redis-deployment.yaml
+  - pvc.yaml
+  # shared
+  - configmap.yaml
   - services.yaml
   - gateway.yaml
   - namespace.yaml
-  - postgres-deployment.yaml
-  - pvc.yaml
-  - redis-deployment.yaml
   - vaultauth.yaml
   - vaultstaticsecret.yaml
+  # new
+  - api-deployment.yaml
+  - api-hpa.yaml
+  - cnpg_cluster.yaml
+  - cnpg_pooler.yaml
+  - ui-deployment.yaml
+  - ui-hpa.yaml
+  # to copy still
+  # - httproute.yaml
+  # - redis-deployment.yaml
+
 
 configMapGenerator:
   - name: remotes-config