Add parsers for the Redfish resources in redfish-map.md

Pure functions for ServiceRoot, ComputerSystem (facts, power state, reset action and ActionInfo), Processors, Memory, Storage/Drives/SimpleStorage, Chassis Thermal and Power as well as ThermalSubsystem/PowerSubsystem/Sensors (with environment_sources to pick whichever exists), Manager, EthernetInterfaces, ManagerNetworkProtocol, accounts, firmware inventory and log services/entries.

napalm_redfish/parsers/service_root.py

@@ -0,0 +1,29 @@
+"""ServiceRoot: ``GET /redfish/v1/`` (readable without credentials)."""
+
+from __future__ import annotations
+
+from typing import Any, Mapping
+
+from .common import link, links, text
+
+
+def parse_service_root(root: Mapping[str, Any]) -> dict[str, Any]:
+    """Version, identity and top-level links of a Redfish service.
+
+    ``vendor`` and ``product`` exist from ServiceRoot 1.5 on; ``oem_vendors`` (the keys under
+    ``Oem``) is what older services offer for picking a quirk module.
+    """
+    found = links(root)
+    sessions = link(root, "Links", "Sessions")
+    if sessions is not None:
+        found["Sessions"] = sessions
+    oem = root.get("Oem")
+    return {
+        "name": text(root.get("Name")),
+        "redfish_version": text(root.get("RedfishVersion")),
+        "uuid": text(root.get("UUID")),
+        "vendor": text(root.get("Vendor")),
+        "product": text(root.get("Product")),
+        "oem_vendors": sorted(oem) if isinstance(oem, Mapping) else [],
+        "links": found,
+    }