feat: deploy artifactapi3 (#192)

just-enough to test terraform deployment and begin migration. have
change to cnpg for the database and a new bucket for storage

---------

Co-authored-by: Ben Vincent <ben@unkin.net>
Reviewed-on: #192

apps/base/artifactapi/cnpg_pooler.yaml

@@ -0,0 +1,33 @@
+---
+apiVersion: postgresql.cnpg.io/v1
+kind: Pooler
+metadata:
+  name: artifactapi-postgres-pooler
+  namespace: artifactapi
+spec:
+  cluster:
+    name: artifactapi-postgres
+  instances: 2
+  pgbouncer:
+    parameters:
+      default_pool_size: "100"
+      max_client_conn: "400"
+    paused: false
+    poolMode: session
+  template:
+    metadata:
+      labels:
+        app: artifactapi-pooler
+    spec:
+      affinity:
+        podAntiAffinity:
+          requiredDuringSchedulingIgnoredDuringExecution:
+            - labelSelector:
+                matchExpressions:
+                  - key: app
+                    operator: In
+                    values:
+                      - artifactapi-pooler
+              topologyKey: kubernetes.io/hostname
+      containers: []
+  type: rw