no-skuba-template-js should pass on template repos

[72636c]

This is a bit embarrassing but I think the skuba.template.js internal lint rule fails on actual template repos:

skuba/src/cli/lint/internalLints/noSkubaTemplateJs.ts

Lines 24 to 36 in db7eae8

	const templateConfigPath = path.join(
	path.dirname(manifest.path),
	'skuba.template.js',
	);
	if (await pathExists(templateConfigPath)) {
	logger.err(
	`Template is incomplete; run ${logger.bold(
	packageManager.exec,
	'skuba',
	'configure',
	)}. ${logger.dim('no-skuba-template-js')}`,
	);

Some options to resolve this after we land #1370 may include:

1. We add some property to the skuba.template.js during skuba init which differentiates the templated file from the original template, then check for that
2. Heuristics around the repository name and whether package.json#/skuba exists (no need for it to on a template repo)