Enhance Keenetic model and update templates for improved data handling

- Implemented the `interfaces` and `vlans` methods in the `Keenetic` model to process and decode interface and VLAN data.
- Added a `_decode_utf` method to handle UTF-8 encoded descriptions.
- Updated the Keenetic TTP template to define structured groups for system, interfaces, and VLANs.
- Refactored file paths in the `Mikrotik` model for consistency and clarity.

oxi/interfaces/models/keenetic.py

@@ -1,20 +1,54 @@
+from ipaddress import ip_interface
+from pprint import pprint
 from oxi.interfaces import register_parser
 from oxi.interfaces.base import BaseDevice
+from oxi.interfaces.contract import Interfaces, System, Vlans
 
 
 @register_parser(["NDMS", "keenetic", "KeeneticOS"])
 class Keenetic(BaseDevice):
     template = "keenetic.ttp"
 
-    def system(self): ...
+    def system(self):
+        return System(**self._raw["system"])
 
-    def interfaces(self): ...
+    def _decode_utf(self, text: str):
+        if "\\x" in text:
+            desc = text.strip('"')
+            decoded = (
+                desc.encode("utf-8")
+                .decode("unicode_escape")
+                .encode("latin1")
+                .decode("utf-8")
+            )
+            return decoded
+        return text
 
-    def vlans(self): ...
+    def interfaces(self):
+        interfaces: list[dict] = self._raw["interfaces"]
+        for item in interfaces:
+            if item.get("ip_address") and item.get("netmask"):
+                ipaddress = ip_interface(
+                    f"{item.get('ip_address')}/{item.get('netmask')}"
+                )
+                item["mask"] = ipaddress.network.prefixlen
+                item.pop("netmask", "Key not found")
+            if item.get("description"):
+                decoded = self._decode_utf(item.get("description", ""))
+                item["description"] = decoded
+        return [Interfaces(**item) for item in interfaces]
+
+    def vlans(self):
+        vlans = self._raw["vlans"]
+        for item in vlans:
+            if item.get("description"):
+                decoded = self._decode_utf(item.get("description", ""))
+                item["description"] = decoded
+        return [Vlans(**item) for item in vlans]
 
 
 if __name__ == "__main__":
-    with open("../../test2.txt") as file:
+    with open("./test2.txt") as file:
         data = file.read()
     mikr = Keenetic(data)
-    print(mikr.parse().json())
+    print(mikr.parse().model_dump_json())