Escape mustaches in prometheus rules for Helm. (#645)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

- **New Features**
- Introduced a dynamic alert configuration system that aggregates
multiple alert settings into a single, streamlined document for easier
management.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/system/kafka-operator/templates/alerts.yaml

@@ -0,0 +1,7 @@
+{{- $files := .Files.Glob "alerts/*.yaml" -}}
+{{- range $path, $file := $files }}
+---
+# from: {{ $path }}
+{{ toString $file }}
+
+{{- end -}}