Move operators dir

[anyasabo]

Move everything in the operators dir up a level

In general this was

• rewrite all imports
• search for any other operators strings and update those
• Merge READMEs because we had one in each dir. Looks like my markdown plugin also auto-updated the TOC since we had some headers that weren't in the TOC.

Unfortunately sometimes the diffs got so large that it didn't see it as a rename any longer and sees it as a new file, for instance with the Makefiles. For those it might be helpful to view it commit by commit so you can see one is just the mv and then another is fixing it up.

Incomplete

I don't totally understand build/ci/Makefile, e.g.

	@ docker run --rm -t \
...
    	$(CI_IMAGE) \
    	bash -c "make -C operators ci-release"

I think those need to be changed to just make ci-release but I'm not sure, need to do some more reading. Update I went ahead and just did this

[anyasabo]

Feel free to merge this if yall approve before I get in tomorrow since I imagine it will make your lives easier to have it in sooner than later