Express membership in DAOs

[luisivan]

Some people are confused and asking how to add people to their DAOs. While this concept doesn't exist in aragonOS, I think we should resemble it in some way or another.

A very flexible way that doesn't break the aragonOS way of doing things would be to:

• Set a token as the Membership token. This could be done locally in the Settings app
• List those token holders in the autocomplete box when typing Ethereum entities
• To add a new member, just give the member a token

What do you think about this @jounih @chris-remus @bpierre ?

[jvluso]

This could just be an app that can be used instead of the token manager. It just needs to be a non-transferable, mintable, revokable token that no one can hold more than one of.

[luisivan]

We already have that logic in the token manager, which can be initialized in "group" mode to resemble that structure

[sohkai]

Another option that came up was potentially adding a new app that allowed a DAO to assign ENS names, perhaps recursively, to express "membership". These ENS names could also be attached to organization-specific identity profiles.