Create a script to automate portions of the onboarding process

[benjaminking]

As described in #725, #726, and #727, there are portions of the onboarding process that could use to be automated in order to help reduce the bottleneck. Those issues describe some pieces of functionality that should be present in a new onboarding script. This issue will track the creation of the new onboarding script, and its sub-issues will track each of the various functions of the script.