align_with_target_grid: Aligns 'grid_from' with 'grid_to' for certain cells
In DrylandEcology/rSFSW2: Simulation Framework for SOILWAT2

Aligns grid_from with grid_to for certain cells

1	align_with_target_grid(grid_from, coords, grid_to, crs_to = NULL)

`grid_from`	A `raster::RasterLayer` object.
`coords`	A matrix of x and y coordinates, or a `sp::SpatialPoints` object indicating which cells of projected `grid_from` will be used.
`grid_to`	A `raster::RasterLayer` object.
`crs_to`	A `sp::CRS` object or `NULL` in which case it will be extracted from `grid_to`.

A list with two elements

x: A raster::RasterLayer object. Cells values are NA or 1 if they contain points of coords.
index: An integer vector. The cell numbers of x that correspond to coords.