feat(helm): chart skeleton (Chart.yaml, values, helpers)

Initial scaffold for the ezscale-website chart. Defaults assume
self-contained local dev (in-cluster MariaDB + Valkey). Production
overrides will live in values-us-prod.yaml.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

helm/ezscale-website/Chart.yaml

@@ -0,0 +1,9 @@
+apiVersion: v2
+name: ezscale-website
+description: EZSCALE billing platform — Laravel app (web + horizon + scheduler)
+type: application
+version: 0.1.0
+appVersion: "0.1.0"
+maintainers:
+  - name: EZSCALE
+    email: dev@ezscale.cloud