Add a script for creating hackathon issues

What does this MR do and why?

Adds a script for creating hackathon issues in bulk from a CSV.

Closes gitlab#385228 (closed)

Screenshots, screen recordings, or links to review app

• Sample issues in Suzanne's test project: %updog in sselhorn/test-project
• The above issues were created from this spreadsheet: https://docs.google.com/spreadsheets/d/1Ov9aulOVmA1kFtvajLGDFgmmHqg1bdZzsyAaBEC0WGc/edit#gid=0
• Command used:

CSV_PATH=Sheet1.csv REPO="https://gitlab.com/sselhorn/test-project" MILESTONE="updog" ./scripts/create_issues.js

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

1. Check out this branch
2. Run yarn to pull down the new dependency (a CSV parser)
3. Run the script, following the usage directions at the top of the file (we can document this somewhere better once we're happy with how it works!)

Merge request acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this merge request.