Refactor image configuration in paperless-ngx chart

This commit restructures the image configuration in the
paperless-ngx Helm chart. The image repository, pull policy,
and tag have been moved under a new `controllers` section
to standardize the deployment options. The main controller
is now explicitly defined with settings for type and
replicas, improving clarity and maintainability of the
values.yaml configuration.

This change was necessary to align the structure with
updated chart specifications and to facilitate future
expansion of controller types within the chart.

No breaking changes are introduced, but users should be
aware of the new hierarchy in the configuration
structure.

charts/paperless-ngx/values.yaml

@@ -2,16 +2,21 @@
 # IMPORTANT NOTE
 #
 # This chart inherits from our common library chart. You can check the default values/options here:
-# https://github.com/bjw-s/helm-charts/blob/a081de5/charts/library/common/values.yaml
+# https://github.com/bjw-s-labs/helm-charts/commit/310fedbca8dfe180359e20b32b6a05da74ae2abd/charts/library/common/values.yaml
 #
-
-image:
-  # -- Image repository
-  repository: ghcr.io/paperless-ngx/paperless-ngx
-  # -- Image pull policy
-  pullPolicy: IfNotPresent
-  # -- Image tag
-  tag: 2.20.0
+controllers:
+  main:
+    enabled: true
+    type: deployment
+    replicas: 1
+    defaultContainerOptions:
+    image:
+      # -- Image repository
+      repository: ghcr.io/paperless-ngx/paperless-ngx
+      # -- Image pull policy
+      pullPolicy: IfNotPresent
+      # -- Image tag
+      tag: 2.20.0
 
 # -- Environment variables [[ref]](https://docs.paperless-ngx.com/configuration/)
 # @default -- See [values.yaml](./values.yaml)