Method SkipIf

src/core/string_consumer.hpp:463–466

* If the next data matches 'str', then skip it. */

	 * If the next data matches 'str', then skip it.
	 */
	void SkipIf(std::string_view str)
	{
		if (this->PeekIf(str)) this->Skip(str.size());
	}

	/**
	 * Check whether the next 8-bit char matches 'c'.