load_config fails in windows

[Rich-Harris]

according to https://twitter.com/whiteadderPT/status/1362877103218323459. i think the fix is here:

kit/packages/kit/src/api/load_config/index.js

Lines 61 to 70 in 5e267a8

	export async function load_config({ cwd = process.cwd() } = {}) {
	const config_file = join(cwd, 'svelte.config.cjs');
	const config = await import(config_file);
	const validated = validate_config(config.default);
	// TODO check all the `files` exist when the config is loaded?
	// TODO check that `target` is present in the provided template
	return validated;
	}

It should probably be await import(pathToFileURL(config_file).href);

[dummdidumm]

I think someone fixed that in this repo https://github.com/GrygrFlzr/not-svelte-kit