initial structure implemented

docs -> _docs

models/satellite/__init__.py

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+from .tile_coords import TileCoords
+from .tile_bounds import TileBounds
+from .tile_candidate import TileCandidate
+
+__all__ = [
+    "TileCoords",
+    "TileBounds",
+    "TileCandidate",
+]
+

models/satellite/tile_bounds.py

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+from pydantic import BaseModel
+from ..core.gps_point import GPSPoint
+
+
+class TileBounds(BaseModel):
+    nw: GPSPoint
+    ne: GPSPoint
+    sw: GPSPoint
+    se: GPSPoint
+    center: GPSPoint
+    gsd: float
+

models/satellite/tile_candidate.py

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+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
+

models/satellite/tile_coords.py

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+from pydantic import BaseModel
+
+
+class TileCoords(BaseModel):
+    x: int
+    y: int
+    zoom: int
+