Tutanota debian package

[abalfoort]

Although convenient, I'm not a big fan of appImage files.
So, I decided to build and package the latest release for Debian (and derivates that use deb).

If you are interested to try it out, it is in our SolydXK repo.
You can download it here:
https://repository.solydxk.com/pool/upstream/t/tutanota/

As I am a Tuta user myself I will build and update the package on each release, but it would be better if Tuta would have its own repository.

Let me know what you think.