Issue description:
I know it's quite late for such suggestion, but plugins from 2.x need to be converted by developer to 3.x anyway so maybe it's not too late to consider such change. My reasoning is very subjective so I don't expect for this change to happen, however maybe more users feel similar?

reasoning:

1. "plugins" name seems to better explain function of this folder.
2. I think 'addons' is very graceful name for very specific usecase:
   • third party loose scenes and scripts
   • scenes and scripts that are used by studio internally across multiple projects