This repo should be archived and examples subdomain redirected

[mikemaccana]

https://examples.anchor-lang.com/ still has a lot of SEO, eg #1 on Google for ‘Solana Anchor Example’ but is badly out of date.

Someone should:

• Archive the repo
• Make examples.anchor-lang.com/ redirect to https://anchor-lang.com/docs/references/examples

cc @ZYJLiu