Current iteration requires bash+docker only. Add support for state of nodejs only.

[johnstonphilip]

Currently pluginade scripts requires a state where bash and docker are available.

There are some cases where only nodejs is available (like wasm). For this state, we could create a second approach, where instead of using sh pluginade.sh whatever-command, those commands would be built into the package.json file's scripts.

When called from package.json like that, they would not use docker, and the assumption is that nodejs is already available.

In this state it would be ideal (but maybe not possible) to have 1:1 parity with the bash+docker state. While things that already use a node docker container would be easy to add, other things like phpunit may be more difficult.