Refactor contracts to use namespaced storage layouts (ERC-7201)

[bagelface]

Refactor the contracts to use namespace storage layouts in accordance the specification defined by ERC-7201. This will require a refactor of all non-pure functions to load the contract state into memory.

This will require proxy contracts to be redeployed to new addresses since it will reorganize storage layout

Please approve with a 👍 @RonTuretzky @daopunk