Add the plugins test back

[lastmjs]

The plugins test has been removed do to complications with the sqlite dependencies compiling to wasm32-wasi. This doesn't really seem like our problem, so I'm punting on it for now. Hopefully when the authors of those libraries get things working we can just update the dependencies in the example and reenable the tests.

• sqlite plugin is broken
  • potential fix: fix compilation for target wasm32-wasi rusqlite/rusqlite#1321
  • potential fix: Can't build for wasm target rusqlite/rusqlite#827