docs(node-features): Add intial README

infrastructure/node-features/README.md

+Node-Feature-Discovery
+===
+
+This component provides Node capability discovery to the cluster. It labels all nodes with various capabilities from CPU and more. Most noteworthy are System ID and version, providing useful metadata to the system-upgrades component.
+
+Links
+---
+
+- [Docs](https://kubernetes-sigs.github.io/node-feature-discovery/)
+- [Helm Chart](https://artifacthub.io/packages/helm/node-feature-discovery/node-feature-discovery)