## What this PR does
Add Qdrant vector database as a new managed application, following the
HelmRelease-based vendoring pattern (same as nats, ingress, seaweedfs).
Changes:
- `packages/system/qdrant/` — vendored upstream Qdrant Helm chart
- `packages/apps/qdrant/` — wrapper chart creating Flux HelmRelease CR
- `packages/system/qdrant-rd/` — ApplicationDefinition for
`apps.cozystack.io/v1alpha1/Qdrant` CRD
- `hack/e2e-apps/qdrant.bats` — E2E test
Features:
- Single replica or clustered mode (automatic based on replica count)
- Persistent storage with configurable size and storage class
- Resource presets (nano to 2xlarge)
- API key authentication (auto-generated)
- Optional external LoadBalancer access
- Dashboard integration with WorkloadMonitor and ServiceMonitor
### Release note
```release-note
[qdrant] Add Qdrant vector database as a managed application
```
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
## Release Notes
* **New Features**
* Added Qdrant vector database as a managed service, enabling users to
deploy and manage Qdrant instances with configurable replicas, storage,
and resource presets.
* Introduced support for external access, persistent storage, API key
management, and metrics monitoring integration.
* Added end-to-end testing for Qdrant deployments.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
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