Add cotp

[replydev]

Description:

cotp is a very simple two-factor authentication utility written in rust with simplicity and efficiency in mind. It relies in a single encrypted database file and has only the very important features to manage your codes, no useless stuff.

It can also import backups from Aegis, andOTP, Authy and Google Authenticator.

Why you think it's awesome:

I written this little app because i really wanted to manage my two factor authentication codes without using my phone and i didn't find any similar on the internet.

So I thought I might not be the only one needing a utility like this, I hope someone appreciates this little work. Thanks for reading this request.