I needed this myself, especially with using addons like HyperTTS where I will often tweak my configs, so I made it: https://ankiweb.net/shared/info/60290354
Now updated with fancy UI for managing addons one-by-one, if you need to ignore specific addons or are installing addons that you added configs for on another device.
Previous automatic syncing is still enabled by default, so nothing changes when you update, but you now will have the option of not syncing automatically and instead asking what to do when something would change.
