chore(repo): init helm-charts repo with two charts and automated package/push

.env.example

@@ -0,0 +1,16 @@
+# Required: Helm OCI namespace to push to (host/org or host/user)
+# Examples: ghcr.io/your-org, gitea.example.com/your-user
+HELM_OCI_NAMESPACE=
+
+# Optional: Registry credentials (if not already logged in via `helm registry login`)
+HELM_USERNAME=
+HELM_PASSWORD=
+
+# Optional: Space separated chart dirs. If unset, script auto-discovers
+# CHART_DIRS="code-server-chart vllm-serve"
+
+# Optional: Set to 1 to only build locally without pushing
+# DRY_RUN=1
+
+# Optional: Extra flags for helm push
+# HELM_PUSH_EXTRA_ARGS="--insecure-skip-tls-verify"