Once they publish the docs for how to build plugins, TablePlus is going to be the obvious choice. I can't wait for my database browser to have charting!
They have a few plugins available on GitHub so you can copy and adapt and intuit some of the API but I did not see docs available a few weeks ago when I looked.
I also think TablePlus is the best option by far right now, although sadly not open source - would be great if they'd consider Open Sourcing at least the code base licences have already expired passed for.
This looks like a great contender though. Would be useful to have a few more filter options.