filter_spatial: Get features topologically associated with extent bounds.
In JGCRI/gcammaptools: Plot GCAM Output on Maps

Conducts a spatial join to retrieve spatial features that are topologically associated (intersects, contains, within, etc.) with the provided bounds.

1 2	filter_spatial(mapdata, bbox, agr_type = "constant", topo = sf::st_intersects)

`mapdata`	The sf object containing the spatial data.
`bbox`	Bounding box.
`agr_type`	Inherited attribute-geometry-relationship type from plot_GCAM function params.
`topo`	SF topologic function to define how the join will be conducted. Default is to join any feature that intersects the bounding box.