Export Bezier curve result to GeoJSON format

[Tania526-sudo]

Currently, the Bezier curve is visualized using matplotlib, but not exported for use in GIS platforms.
Goal: Enable saving the generated Bezier curve to GeoJSON, so it can be opened in QGIS, Leaflet.js, or other spatial tools.

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Tasks:

• Convert curve points (x, y) to shapely.geometry.LineString
• Use GeoDataFrame from geopandas to wrap it
• Export to output/curve.geojson via to_file(..., driver="GeoJSON")
• Add a flag or function call in Bezier.py to trigger this export

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Dependencies:

• shapely
• geopandas

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Example code snippet:

from shapely.geometry import LineString
import geopandas as gpd

line = LineString(list_of_xy_points)
gdf = gpd.GeoDataFrame(index=[0], geometry=[line])
gdf.to_file("output/curve.geojson", driver="GeoJSON")