[Feature Request] Multi-user household and subscriptions

[AlexKalopsia]

Thanks for Wallos, it's awesome!

I think it would be very useful if multiple users could belong to the same household and, as such, be able to share subscriptions. This is useful in the use case where in your household - for example - both you and your partner have a subscription (weekly groceries delivery) that you both benefit from (and might even pay for from a shared bank account).

Currently my options to achieve the scenario above, I believe, are:
1 - Create a 3rd "shared" account for the household. This is still very impractical because I would not see all the shared items when connecting with my account. Also in conflict with the current concept of Household.
2 - Ask my partner to also add the same item. Doable but extremely prone to error.
3 - Don't use multi-user. I believe this is the best approach right now, but imho it defeats the purpose and ambition of multi-user. I guess right now I could create a single "household" account, and handle everything from that. The downside is that I might see subscriptions belonging to my partner that I don't care about, and I do believe this basically cancels the very concept of multi-user

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Proposal

Multi-user household

We already have a concept of Household.
We promote this to be multi-user, meaning that the registered user A can add to the household other registered users pulled from the database.

To keep this simple, we can assume that users do this in good faith and we don't need a flow to accept the invitation to a household.
If we do have a concept of admin, we could make it so that only the admin can add and remove.
When a registered user is added from the drop-down, the option to change the email address is grayed out.
In the case above, non-registered user could be Meggie, who is too young and perhaps doesn't really need a full account.

Multi-user subscription

To keep things super simple, we could have a simple checkbox to begin with. This will make the subscription visible to all the registered members belonging to the household.

Even in this case, editing right might be shared, or only belong to the admin or the person who generated the item.

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I don't claim this is the best solution ever, but it could be something. Compatibly with the difficulty of the task (and perhaps with guidance) I could be happy to contribute and help advancing this feature (design/code).