Movie author management could be easier

Edit (2023-08-15): Originally, this was specifically about the Make Default Author checkbox, but just generally enhancing BizHawk's ability to manage multiple authors is the fundamental issue; see the last paragraph below.

The make default author checkbox allows you to change what the author will be the next time you startup. But if you're a user who uses different authors regularly (perhaps you frequently collaborate), you probably don't want to be locked into any one default.

Also, thinking about whether you want to change the Make Default Author checkbox each time you record a movie is just a waste of time.

Instead, I would prefer if BizHawk maintained a list of previous authors and presented the list in a dropdown in the Record Movie dialog. Ideally, it would also allow deleting them from the list by pressing Shift+Delete (standard keystroke for removing dropdown items).

Start at BizHawk's Record Movie dialog and inspect the existing Make Default Author checkbox behavior. Define how previous authors are listed, selected, and removed with Shift+Delete. Done means users can manage multiple authors without changing a single default each time, with the behavior verified in the dialog.