Add new PGPme project

This little project adds a site that everyone can use to encrypt a message and send it to me using their email client.

This should simplify the sharing of messages and secret with me, without the need of putting an entire OpenPGP infrastructure on the person's side just to encrypt the message. It seems like a lot of people are overwhelmed by that.

Since I don't want to run any active component to send emails on my side and I don't want to add 3rd parties to handle that for me, simply opening the message in the user's client seems the right thing to do.It Also makes sure, that this has no GDPR implications since nothing can be identified from my side. The user has to decide whenever they want to send the email or not.