Create module for converting vector to raster mask

[tm-abby-moreno]

This PR addresses the issue: #170

This PR adds a new module called vector_to_raster_mask.py with 2 functions: _explode and generate_mask. The core function is the generate_mask and _explode is just an internal helper function. This function converts vectors into rasters where each pixel is a numerical representation of a feature in the vector data. The intended use is to convert vector annotations into raster labels/masks that align with satellite images.

User will need to provide a reference raster image (for this PR we used a TIF image for now), a shapefile that contains the area of the raster image and this shapefile must have a column/feature that contains labels/categories. They must also provide a dictionary of their desired labels and values to be added to the masks.

Other updates:

• updated the flake8 file to ignore an unused import warning (already explained this to @butchtm that the import does not get explicitly called but is needed in plotting the image)
• updated sidebar.json to display the docs of this module

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[butchtm]

hi @tm-abby-moreno

I forgot to add - can I request you to add the files

• cabanglasan.tif
• labels_20220816.gpkg to the data directory and update the notebook to point to that instead?