⏪️(helm) bring back helm chart

This is a revert of 1da5a removing actual deployments and keeping
only the dev environment in Tilt.

The clean-up was a bit heavy handed. We should keep the Helm
chart to the development repository and move away only the
deployment configuration.

src/helm/helmfile.yaml

@@ -0,0 +1,67 @@
+repositories:
+- name: bitnami
+  url: registry-1.docker.io/bitnamicharts
+  oci: true
+
+releases:
+  - name: postgres
+    installed: {{ eq .Environment.Name "dev" | toYaml }}
+    namespace: {{ .Namespace }}
+    chart: bitnami/postgresql
+    version: 13.1.5
+    values:
+      - auth:
+          username: dinum
+          password: pass
+          database: impress
+      - tls:
+          enabled: true
+          autoGenerated: true
+
+  - name: minio
+    installed: {{ eq .Environment.Name "dev" | toYaml }}
+    namespace: {{ .Namespace }}
+    chart: bitnami/minio
+    version: 12.10.10
+    values: 
+      - auth:
+          rootUser: impress
+          rootPassword: password
+      - provisioning:
+          enabled: true
+          buckets:
+            - name: impress-media-storage
+              versioning: true
+
+  - name: redis
+    installed: {{ eq .Environment.Name "dev" | toYaml }}
+    namespace: {{ .Namespace }}
+    chart: bitnami/redis
+    version: 18.19.2
+    values:
+      - auth:
+          password: pass
+        architecture: standalone
+
+  - name: extra
+    installed: {{ ne .Environment.Name "dev" | toYaml }}
+    namespace: {{ .Namespace }}
+    chart: ./extra
+    secrets:
+      - env.d/{{ .Environment.Name }}/secrets.enc.yaml
+
+  - name: impress
+    version: {{ .Values.version }}
+    namespace: {{ .Namespace }}
+    chart: ./impress
+    values:
+      - env.d/{{ .Environment.Name }}/values.impress.yaml.gotmpl
+    secrets:
+      - env.d/{{ .Environment.Name }}/secrets.enc.yaml
+
+environments:
+  dev:
+    values:
+      - version: 0.0.1
+    secrets:
+      - env.d/{{ .Environment.Name }}/secrets.enc.yaml