Provide default chunking and compression options

[stephprince]

Provide a utility function that generates an ArrayDataSetConfig based on the expected/detected shape of an array and the expected acquisition patterns for different data types

See also: #26

[oruebel]

One question to consider is if/how the neurodata_type may play a role in this. E.g,. an neurodata_type that stores imaging data in a 3D array may prefer a different chunking and compression than an array that stores spikes.