Implement Loc->Geo->Canyon name generator

[ChrisRenfrow]

See #293

[ChrisRenfrow]

@MikkelPaulson I'm planning on tackling this and the remainder of the Location -> Geography name-generators this and next week, any notes before I start?

[MikkelPaulson]

@ChrisRenfrow Sorry for the delayed response. No notes in particular! Some kind soul has seen fit to DRY out a bunch of the vocabulary in the name generators, which should make life that much easier. ;)

Also, you don't have to keep asking for permission. I include that request in the contributing guidelines to ensure that I have a chance to properly scope a task in advance and address any questions someone might have, but you know the drill for generators by now.

[ChrisRenfrow]

No worries! Also, I definitely started without waiting for your response anyway. 😆 Expect a PR for this before the end of the week.