refactor: move Helm chart to standard directory structure

This commit restructures the paperless-ai Helm chart by moving all files
 from the nested directory (charts/paperless-ai/paperless-ai/) to the
 standard Helm chart directory structure (charts/paperless-ai/). The change
 eliminates the redundant directory nesting that was causing issues with
 Helm chart packaging and installation. No functional changes were made to
 any files - this is purely a directory structure reorganization to follow
 Helm best practices and improve chart maintainability.

charts/paperless-ai/README.adoc

@@ -0,0 +1,33 @@
+= paperless-ai-helm-chart
+
+A Helm chart for deploying https://github.com/clusterzx/paperless-ai[clusterzx/paperless-ai] on Kubernetes.
+
+== 🚧 Under Construction 🚧
+
+Thank you for visiting the *paperless-ai Helm Chart* repository! 🎉
+
+This project is currently under construction, and we are actively working on setting it up. 
+Please check back soon for updates, or feel free to follow the repository to stay informed about our progress.
+
+In the meantime, if you have any questions or suggestions, don't hesitate to open an issue or reach out.
+
+Thank you for your patience and support!
+ 
+The paperless-ai-helm-chart Team ❤️
+
+
+== Helm Chart
+
+=== Repository
+
+The helm chart is not deployed to a repository yet.
+
+=== Installation
+
+You can define your custom values files based on `paperless-ai/values.yaml`. Just copy and update the values, which should be overwritten and delete the other parts out of your customized values.yaml file.
+
+Install the helm chart with the following command:
+
+`helm upgrade --install MY-RELEASE ./paperless-ai -f YOUR-CUSTOM-VALUES-FILE.yaml`
+
+Please keep in mind to set the paperless configuration. See current values.yaml file.