Multiple users and portfolio sharing

[0xC0ncord]

Briefly discussed on Matrix, but opening here for longevity.

I'd like to be able to have multiple users on my Paisa instance, each with their own personal data and portfolios. Additionally, I'd like to be able to have "sub" portfolios that can be shared between users.

My main use case is to use Paisa between myself and my wife. We will each have our own portfolios (as we have our own accounts and so on) as well as a shared joint portfolio. We can both view each other's portfolios (if desired) and we can both view and edit the shared joint portfolio.