initial structure implemented

docs -> _docs

models/core/pose.py

@@ -0,0 +1,15 @@
+from datetime import datetime
+from typing import Optional
+import numpy as np
+from pydantic import BaseModel, ConfigDict
+
+
+class Pose(BaseModel):
+    model_config = ConfigDict(arbitrary_types_allowed=True)
+
+    frame_id: int
+    position: np.ndarray
+    orientation: np.ndarray
+    timestamp: datetime
+    covariance: Optional[np.ndarray] = None
+