Chainable Options - TypeScript Type Challenges #12 [MEDIUM]

Thankfully JavaScript APIs that rely on method Chaining (where you go `a.b().c().d().e().f()`) have fallen out of fashion, but even if you dislike this style of API, this is one of the first challenges that should make you stand back and say "WOW! YOU CAN DO THAT?!?!". Enjoy.