Embed JS files for testing webworker into pytest-pyodide wheel

[ryanking13]

Similar to #87, embed module_webworker_dev.js and webworker_dev.js files that are used in pytest-pyodide to test webworker functionality. This is used in run_webworker method:

pytest-pyodide/pytest_pyodide/runner.py

Lines 293 to 302 in bfa37e2

	def run_webworker(self, code):
	if isinstance(code, str) and code.startswith("\n"):
	# we have a multiline string, fix indentation
	code = textwrap.dedent(code)
	worker_file = (
	"webworker_dev.js"
	if self.script_type == "classic"
	else "module_webworker_dev.js"
	)

I need this to run webworker tests with pyodide-core archive in https://github.com/ryanking13/pyodide-recipes-mirror