feat(catalog): add qdrant 1.18.2 chart

- Pull upstream qdrant-helm chart v1.18.2 (appVersion v1.18.2)
- Add PaaSup custom overrides: custom-values.yaml, dip-values.yaml
  (ingress.ingressClassName=apisix), dip resource/volume quotas
- No breaking changes to existing overrides vs 1.12.4; helm lint passes,
  image renders as docker.io/qdrant/qdrant:v1.18.2

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

manifests/helm/qdrant/1.18.2/Chart.yaml

@@ -0,0 +1,22 @@
+annotations:
+  artifacthub.io/category: database
+  artifacthub.io/changes: |
+    - kind: added
+      description: Update Qdrant to v1.18.2
+apiVersion: v2
+appVersion: v1.18.2
+description: Qdrant - Vector Database for the next generation of AI applications.
+home: https://qdrant.tech
+icon: https://qdrant.github.io/qdrant-helm/logo_with_text.svg
+keywords:
+- vector database
+maintainers:
+- email: info@qdrant.com
+  name: qdrant
+  url: https://github.com/qdrant
+name: qdrant
+sources:
+- https://github.com/qdrant/qdrant
+- https://github.com/qdrant/qdrant-helm
+type: application
+version: 1.18.2