Ownable2 step

[sandybradley]

Description

Create Ownable2Step

Checklist

Ensure you completed all of the steps below before submitting your pull request:

• Ran forge snapshot?
• Ran npm run lint?
• Ran forge test?

Pull requests with an incomplete checklist will be thrown out.

closes #375

[0xtekgrinder]

Hey, I am the creator of the issue linked to this PR. I think it may lacks a constructor to be able to specify easily the original owner of the contract

[sandybradley]

Thanks for your feedback. The new contract inherits original Owned contract which set owner at construction:

    constructor(address _owner) {
        owner = _owner;

        emit OwnershipTransferred(address(0), _owner);
    }

Let me verify that assertion by adding some tests.

[eugenioclrc]

wen merge :S