Add RAILIANCE-WP-0007: reuse-surface hub Helm chart on railiance01

Companion to reuse-surface REUSE-WP-0011. Scaffold charts/reuse-surface-hub
with PVC, ingress template, values file, and Makefile deploy targets.

charts/reuse-surface-hub/Chart.yaml

@@ -0,0 +1,17 @@
+apiVersion: v2
+name: reuse-surface-hub
+description: |
+  Federation hub for helix_forge capability registry coordination on Railiance01.
+type: application
+version: 0.1.0
+appVersion: "0.1.0"
+keywords:
+  - reuse-surface
+  - federation
+  - helix-forge
+  - railiance
+home: https://gitea.coulomb.social/coulomb/reuse-surface
+sources:
+  - https://gitea.coulomb.social/coulomb/reuse-surface
+maintainers:
+  - name: railiance-apps