static Catalog findNearestCatalogWithTemplate(Path dir, String templateName) {
		return Catalog.findNearestCatalogWith(dir, true, true,
				catalog -> catalog.templates.containsKey(templateName) ? catalog : null);
	}
Returns the given Template from the local file system

@param templateName The name of a Template
@return A Template object
src/main/java/dev/jbang/catalog/Template.java