initial structure implemented

docs -> _docs

models/satellite/tile_candidate.py

@@ -0,0 +1,14 @@
+from typing import Optional
+from pydantic import BaseModel
+from ..core.gps_point import GPSPoint
+from .tile_bounds import TileBounds
+
+
+class TileCandidate(BaseModel):
+    tile_id: str
+    gps_center: GPSPoint
+    bounds: TileBounds
+    similarity_score: float
+    rank: int
+    spatial_score: Optional[float] = None
+