fix guard?

temp: add commented out assertions in multistep test

test(ctb): Add pre-checks to owner management fuzz test

test(ctb): Add WrappedGuard to expose the ownersBefore set

Loosening this requirement should provide added flexibility when setting
up the liveness system

Also adds comments to clarify the logic.

A new pure function getPrevOwnerFromList() accepts a list to search in,
this avoids making an extra call which breaks expectRevert tests.

Rather than using an OR clause we put them inside an if statement. This allows us to

clarify the error message and is more testable.

Can now easily add, remove and swap owners. Previous owner identification is
handled automatically if not specified. This allows for testing errors
by specifying an incorrect prevOwner.

Moving the multiple overriden execTransaction calls to the end is more readable.
The other write operations are also now grouped together.

This also move the OwnerSimulator into the lib, which nicely abstracts that away.

Also make lib functions internal which removes the deploy and linking with solidity libs.

It was only used once.