fix: @faker-js/faker update to v8

Just found this great extension. Sadly the image generator was broken since place.img has been shutdown.

I have never written a vs code extension, so this was a lot of fun. The extension is now running with faker-js v8 instead of v6. The upgrade guide was pretty helpful for this: https://fakerjs.dev/guide/upgrading

There had been a lot of deprecation warning for v9 too, so I did my best to fix those.

Should not be 100%, but hope it helps.