[WIP] General authorization

[shine2lay]

Goal

Add the general authorization described in : closes #88

Changes

TODO: list all the changes in the PR

[Kyrrui]

The contract names should be Uppercase in accordance with the rest of the projects - "AuthorizationInterface.sol" rather than "authorizationInterface.sol"

[marekkirejczyk]

Hi @shine2lay!

Since the plan for authorization is not yet final I propose we treat it is a test/research implementation and move it to proposals repository.

[shine2lay]

@marekkirejczyk
I think there are two parts to the authorizations,

1. The interface of authorization Contract
2. ways to handle complex multi-authorizations checking in SignedApprovalScheme.sol

I think the interface of the authorization contract is somewhat final (unless this implementation brings up issues we haven't considered to light).
My current work so far is to make sure that that interface is working and we can make one authorization check happen. Once this is working, adding multiple checks will work for sure no matter how we complex we decide to implement it.

I think the 2nd part is going to very complex and it may not even be necessary at the moment. I think it is something that will evolve overtime as requirements and use cases becomes clearer. We may even end up having different version of wallet contract that serves different purposes.

[marekkirejczyk]

Would you like to make a call early next week to sync?

[shine2lay]

@marekkirejczyk I can only do Thursday or Friday next week.

[marekkirejczyk]

Hi, shot me an email on marek (at) ethwroks . io and let's start moving!