"datasette plugins" command is broken

[simonw]

I broke it in a7137df - and it turns out there was no test coverage so I didn't realize it was broken.

[simonw]

datasette/datasette/cli.py

Lines 126 to 129 in 033a1bb

	def plugins(all, plugins_dir):
	"List currently available plugins"
	app = Datasette([], plugins_dir=plugins_dir)
	click.echo(json.dumps(app.plugins(all), indent=4))

But I changed the .plugins() method to this:

datasette/datasette/app.py

Lines 628 to 633 in 033a1bb

	def _plugins(self, request):
	ps = list(get_plugins())
	if not request.args.get("all"):
	ps = [p for p in ps if p["name"] not in DEFAULT_PLUGINS]
	return [