Enable extensions settings sync

[dvcrn]

Love this extension! Thanks a lot for building this

I was wondering how trivial it would be to enable extension settings sync for this. I adjust my proxies here and there and making the changes on all devices constantly is a bit tiresome, especially since the multi account container stuff is already syncing nicely.

(I know multi account containers now support proxy settings, but it still feels a bit half baked...)

[dvcrn]

Looks like it would just be changing the calls to storage.local to storage.sync if the user wants the settings to be synced

firefox-container-proxy/src/store/Store.ts

Line 135 in d7ecb89

await browser.storage.local.set({ proxies: p })

https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/storage/sync

[EkriirkE]

Could this become a preferences toggle? Won't that user modification get lost when the extension updates?