Add units that are used outside plugins

[ralphm]

This adds units that appeared in the extracted list of units from this comment and the corresponding change in the ucum tooling.

[ilyam8]

@ralphm, hey. Is the list in this PR up to date? If not, can you update it?

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}