Enhance device interface structure and update dependencies

- Added `.idea` to `.gitignore` to exclude IDE configuration files.
- Introduced `pydantic` version `2.12.5` as a dependency in `pyproject.toml` and `uv.lock`.
- Added `annotated-types` as a new dependency in `uv.lock`.
- Refactored `BaseDevice` class to include abstract methods for device properties and loading templates.
- Created `Interfaces`, `System`, `Vlans`, and `Device` models in a new `contract.py` file for structured data handling.
- Updated `Mikrotik` class to implement the new `BaseDevice` structure and added a template loading method.

oxi/interfaces/contract.py

@@ -0,0 +1,25 @@
+from ipaddress import IPv4Address
+from pydantic import BaseModel, Field
+
+
+class Interfaces(BaseModel):
+    ip_address: IPv4Address
+    mask: int
+    description: str
+
+
+class System(BaseModel):
+    model: str
+    serial_number: str
+    version: str
+
+
+class Vlans(BaseModel):
+    id: int
+    name: str = Field(alias="description")
+
+
+class Device(BaseModel):
+    system: System
+    interfaces: Interfaces
+    vlans: Vlans