add chapter 3

03-vector_data.qmd

_quarto.yml

data_cambodia/district.gpkg

public/02-data_acquisition.html

public/03-vector_data.html

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public/03-vector_data_files/figure-html/intersect3.1-1.png

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public/03-vector_data_files/figure-html/intersects2-1.png

public/03-vector_data_files/figure-html/osrmroute-1.png