Initial privacy page

[jorys-paulin]

This pull request adds a basic privacy page layout for the website, in order to be compliant for Apple's requests.

For now, this page will only be covering the iOS version, with cover for all other versions in the future as needed.

This page will be accessible at:

• https://moonlight-stream.com/privacy
• https://moonlight-stream.github.io/privacy

@cgutman: You should be able to edit directly without merging then editing