da.extent_slice(), get a sliceable dict for a DataArray.extents (aka bounding box)

Is your feature request related to a problem?

small feature suggestion. not sure if this already exists. if not maybe you could use it.

Describe the solution you'd like

def extent_slice(da):
    '''
    return a `da.sel`-slicable dictionary of coords for the extents of da 
    
    Example
    --------
    big_da.sel(extent_slice(small_da)) 
    '''
    coords = da.coords
    return {k:slice(coords[k].min().data,coords[k].max().data) for k in coords}

useful in conjunction with interp_like, interp, and binary operations.

Describe alternatives you've considered

see above

Additional context

No response

The issue names no implementation file or test; start by checking the existing DataArray coordinate-selection entry points for an equivalent helper. Define the extent behavior for the coordinates shown in the proposal, then verify that the resulting dictionary works with sel and the stated interp_like, interp, and binary-operation use cases.