impr(quotes): Adding Swift Quotes File.

[CedricBaaklini]

I've noticed that there is no quotes for Swift and as someone who loves Swift and uses it as their primary language, I'm a little disappointed that there is no quote file for Swift. So, I decided to make one myself and added a few quotes to get started, including a "Hello World" Program. Feel free to let me know if there are any errors or improvements to be made.