Add Helm chart for Kubernetes deployment

[Adri3nParra]

Hello, I built this for my work since the project only offers Docker-based deployment today with no official Helm chart.

The chart supports all 4 storage providers (local, S3/S3-compatible, Storj, Google Drive) and comes with secure defaults (non-root, read-only filesystem, capabilities dropped). Ingress, Gateway API, HPA, NetworkPolicy, HTTP auth, and ClamAV integration are all optional and independently configurable.

• Local storage with PVC: tested, working
• S3 with MinIO: tested, working
• Storj: not tested — no access to a Storj account
• Google Drive: not tested — requires OAuth credentials I don't have available

Help testing Storj and Google Drive would be welcome.

[francescayeye]

hello @Adri3nParra

thank you very much for the contribution: unfortunately I've no possibility to test your helm chart or maintain it, on top of reviewing your PR.
I won't be able to merge your PR for this reason, since I don't want to end up in the same situation as with the PR for the NIX Flake (#424).

:(

[stefanbenten]

@paolafrancesca I am happy to maintain and test this over the weekend 👍

[Adri3nParra]

If you encounter any issues during your tests, don’t hesitate to let me know, I can also take a look on my side to help you.