add hostnetwork docs

library/common/_docs/values/hostNetwork.md

@@ -0,0 +1,18 @@
+# Host Network
+
+## key: hostNetwork
+
+- Type: `boolean`
+- Default: `false`
+- Helm Template: ❌
+
+Binds container to the host's network
+
+> All services will be forced to `ClusterIP` when `hostNetwork` is enabled,
+> to avoid port conflicts with services requesting the same ports.
+
+Examples:
+
+```yaml
+hostNetwork: true
+```