Implement cloudflare speedtest

[maybe-hello-world]

As a netunicorn developer,
I want to implement a task that will conduct a cloudflare speedtest and return the results,
so I'll be able to use cloudflare for speedtests in addition to ookla.

https://github.com/cloudflare/speedtest

[maybe-hello-world]

cloudflare/speedtest#17

[maybe-hello-world]

Bundled JS file published here: https://github.com/netunicorn/netunicorn-library/releases/tag/cloudflare-speedtest-0.1
Next steps: host the webpage from http.server and with selenium access this page, wait for the test to be finished, and access the results.