Expose the `insert_disk_at_points` functions?

[jgostick]

We have a bunch of functions in tools for inserting disks into image. These are all numba-fied. They are currently all hidden (i.e. name begins with _). Should we expose all of these?

[jgostick]

Probably a better way would be to create a single wrapper function which parses all the inputs then dispatches them to the correct function. Like single sized disk or multiple sizes? It could also do input checking like to ensure that coords is formatted correctly.