FloatingIP model added

interface/network/FloatingIP.py

+import json
+
+
+class FloatingIP:
+    def __init__(self,
+                 id,
+                 router_id,
+                 floating_network_id,
+                 subnet_id,
+                 port_id,
+                 name,
+                 fixed_ip_address,
+                 floating_ip_address,
+                 status,
+                 created_at,
+                 updated_at
+                 ) -> None:
+        super().__init__()
+
+        self.id = id
+        self.router_id = router_id
+        self.floating_network_id = floating_network_id
+        self.subnet_id = subnet_id
+        self.port_id = port_id
+        self.name = name
+        self.fixed_ip_address = fixed_ip_address
+        self.floating_ip_address = floating_ip_address
+        self.status = status
+        self.created_at = created_at
+        self.updated_at = updated_at
+
+    def __str__(self) -> str:
+        return self.toJSON()
+
+    def toJSON(self):
+        return json.dumps(self.__dict__)