feat: add network API and netplan configuration models with example usage

backend/src/Models/netplan.py

@@ -34,3 +34,28 @@ class NetworkConfig(BaseModel):
     renderer: Optional[str] = "networkd"
     ethernets: Dict[str, EthernetConfig] = Field(default_factory=dict)
     bridges: Dict[str, BridgeConfig] = Field(default_factory=dict)
+
+
+'''Example usage:
+{
+  "version": 2,
+  "renderer": "networkd",
+  "ethernets": {
+    "eth0": {
+      "dhcp4": false,
+      "addresses": ["192.168.10.20/24"],
+      "gateway4": "192.168.10.1",
+      "nameservers": {
+        "addresses": ["1.1.1.1", "8.8.8.8"]
+      }
+    },
+    "eth1": {},
+    "eth2": {}
+  },
+  "bridges": {
+    "br0": {
+      "interfaces": ["eth1", "eth2"],
+      "dhcp4": true
+    }
+  }
+}'''