Update item's read status if Status Name is modified in settings

[tommyhosman]

Currently, if someone modifies the Status Name (or deletes a custom status) from the Reading List in settings, library items with the old status name are not updated. Updated icons are reflected in the library items if the status name persists.

It would be nice to auto update library items when a custom status name is changed. Additionally, it'd be helpful to warn the user if they try to delete a Custom Reading Status that is in use.

I'm currently using

• Zotero Reading List 1.2.0
• Obsidian 7.0.0-beta-75

[Dominic-DallOsto]

In general this would be nice. Also affected are the recent changes in #29 (we could end up automatically changing the status to a no longer existing status...)

Overall though the expected behaviour isn't perfectly clear to me:

• should these no longer existing statuses be erased?
• or mapped to some Unknown type
• or should it ask the user exactly what they want for any conflicts introduced?

Probably the last is best, but most complicated