Alternative to TablePlus in docs

[verdverm]

A suggestion to add this VS Code plugin as a recommended alternative / in addition to TablePlus

https://marketplace.visualstudio.com/items?itemName=mtxr.sqltools

It's really good and doesn't require another application

[verdverm]

Happy to make the change if y'all are open to this

[timsehn]

We'd take a PR here.