Star Wars API Demo - Migrate to swapi.info API

[TheFreeman193]

The existing Star Wars API (https://mc-starwars-data.azurewebsites.net) is no longer online and examples from The AAA Approach don't function.

This migrates the example code to a similar demo API (https://swapi.info) hosted on CloudFlare Pages by GitHub user @SivaramPg.

Advantages:

• Very similar dataset to the old API (only 1 change needed in assertions)
• Static backend and thus very quick
• No pagination or result wrapping unlike some other SWAPI demos
• Online and actively maintained

Disadvantages:

• No ID members in result objects, only upstream URL - necessitates Get-SWIdFromUrl to maintain existing code factor/chapter flow

Not to be merged until manuscript changes are published on LeanPub.

Fixes #11