docs: New docs structure & rustdoc for HostNetworkConfigScore

docs/catalogs/topologies.md

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+# Topologies Catalog
+
+A `Topology` is the logical representation of your infrastructure and its `Capabilities`. You select a `Topology` in your Harmony project to define _where_ your `Scores` will be applied.
+
+<!--toc:start-->
+
+- [Topologies Catalog](#topologies-catalog)
+  - [HAClusterTopology](#haclustertopology)
+  - [K8sAnywhereTopology](#k8sanywheretopology)
+
+<!--toc:end-->
+
+### HAClusterTopology
+
+- **`HAClusterTopology::autoload()`**
+
+This `Topology` represents a high-availability, bare-metal cluster. It is designed for production-grade deployments like OKD.
+
+It models an environment consisting of:
+
+- At least 3 cluster nodes (for control plane/workers)
+- 2 redundant firewalls (e.g., OPNsense)
+- 2 redundant network switches
+
+**Provided Capabilities:**
+This topology provides a rich set of capabilities required for bare-metal provisioning and cluster management, including:
+
+- `K8sClient` (once the cluster is bootstrapped)
+- `DnsServer`
+- `LoadBalancer`
+- `DhcpServer`
+- `TftpServer`
+- `Router` (via the firewalls)
+- `Switch`
+- `NetworkManager` (for host-level network config)
+
+---
+
+### K8sAnywhereTopology
+
+- **`K8sAnywhereTopology::from_env()`**
+
+This `Topology` is designed for development and application deployment. It provides a simple, abstract way to deploy to _any_ Kubernetes cluster.
+
+**How it works:**
+
+1. By default (`from_env()` with no env vars), it automatically provisions a **local K3D (k3s-in-docker) cluster** on your machine. This is perfect for local development and testing.
+2. If you provide a `KUBECONFIG` environment variable, it will instead connect to that **existing Kubernetes cluster** (e.g., your staging or production OKD cluster).
+
+This allows you to use the _exact same code_ to deploy your application locally as you do to deploy it to production.
+
+**Provided Capabilities:**
+
+- `K8sClient`
+- `HelmCommand`
+- `TenantManager`
+- `Ingress`
+- `Monitoring`
+- ...and more.