Add `scrape()` abstract method to AbstractScraper
Make K/MPList implement `scrape()` abstract method

Update the K/MPList scraper so that the arguments of its `scrape()` method match the definition of the abstract method of the parent class.
Make S/MPList implement `scrape()` abstract method

Update the S/MPList scraper so that the arguments of its `scrape()` method match the definition of the abstract method of the parent class.
Merge branch 'refs/heads/make-scrape-arguments-generic'