Fix rendering for empty arrays and empty objects

[rlisowski-maystreet]

At the moment empty arrays and objects are not rendered. This can cause errors, when copying the json and trying to use it somewhere else.

• added code to render valid brackets
• updated App.svelte test1 json to include empty object, array, string, null and undefined. Those were added to the top and the nth level of json.

current main:

fix branch:

[zerodevx]

That's a good catch! Could you kindly remove package-lock.json from your commit before I merge? Thanks!

[rlisowski-maystreet]

updated

[zerodevx]

Thanks for your contribution 🙏