Add 1.20.x items to items.json

[Pagofr]

Feature description

The new 1.20 items (like the hanging bamboo sign or the armor trim templates) aren't listed in items.json.
For these to function with essentialsx, they would need to be added.

How the feature is useful

1.20.x Items can be used with /i, /itemdb and /give

[mdcfe]

This is already tracked in #5389 - please search before opening issues.