[Feature Request] Allow the option to rename with Author's Last Name, First Name

[StunnaGunnuh]

From what I have seen there is no option other than "{Author}" for the author.

Please add an option to rename as "Last Name, First Name". Thank you!

[calibrain]

It's a bit hard, since AA is not very good at keeping the order in those (sometimes its First Name, Last name, sometimes Last name, First name or even Author 1, Author 2 etc.)
But if someone wants to take a stab at this, I will gladly review the PR and merge it !