feat!: report hosts and licenses as facts, not warnings (0.2.0)

get_device_warnings is gone; netOrk names the warnings from facts
(netOrk #1111). get_hypervisor_hosts() reports each host's connection
state, maintenance mode, configuration issues and managing vCenter;
get_licenses() the assigned licenses with the edition key as edition,
never the key itself.

The reach stays: the ESXi driver reports connected as None (a
disconnected host could not have answered), and managed_by only for a
host it reached directly. parse/warnings.py is replaced by
parse/hosts.py and parse/licenses.py.

napalm_vmware/parse/licenses.py

@@ -0,0 +1,19 @@
+"""Licenses assigned on an endpoint, as facts (``LicenseMixin.get_licenses``).
+
+The edition key says which edition runs -- ``esxBasic`` is the free vSphere
+Hypervisor, whose API refuses every write; what follows from that is the
+caller's to decide. The license key itself is never reported.
+"""
+
+from __future__ import annotations
+
+from typing import Any
+
+from napalm_device_types.models import LicenseDict
+
+
+def license_list(licenses: list[dict[str, Any]]) -> list[LicenseDict]:
+    return [
+        {"name": lic.get("name", ""), "status": "active", "edition": str(lic.get("editionKey", ""))}
+        for lic in licenses
+    ]