Allow plugins

[tunnckoCore]

Because, npm is just one of them.

Wrap this as "npm plugin"

cli/src/cli.js

Lines 47 to 68 in b630bf3

	const defaultRegistry = 'https://registry.npmjs.org/';
	const registry =
	argv.registry || proc.env.NPM_REGISTRY || defaultRegistry;
	const content = ded`//registry.npmjs.org/:_authToken=${token}
	sign-git-tag=false
	git-tag-version=false
	allow-same-version=false
	`;
	const opts = {
	cwd: argv.cwd,
	stdio: 'inherit',
	};
	await util.promisify(fs.writeFile)(
	path.join(argv.cwd, '.npmrc'),
	content,
	);
	await exec(`npm version ${result.nextVersion}`, opts);
	await exec(`npm publish --registry ${registry}`, opts);
	console.log('Successfully published.');

To the plugin function pass argv, process.env and the result object.