Adjustments to the Lowest Points Near Location Tool

Made adjustments to the tool that so that I no longer receive Errors
000875, 000581. Additionally, I added to the tool to get a manageable
output. Before I added to the model, I would get a return of multiple
points with the same attribution due to elevation similarities.
Basically, I add a Mean Center tool to remove multiple point and create
a singular center point. Also added function to add elevation values
within the attribute table.