Adding the All-Purpose Tool to the character sheet

Background: The All-Purpose Tool +1 gives you a +1 attack roll, +1 spell save DC, proficiency with any tool, and an additional cantrip that can be changed at dawn.

The DnDBeyond sheet implements the attack roll and the spell save DC correctly, but not the other two features.

I found this very helpful video that shows how to implement those as a homebrew feat, and it's almost got it:
https://www.youtube.com/watch?v=OZinfuI5xhk

The last thing though, is that the cantrip it provides counts as an Artificer spell, so should get the +1 to attack and DC, but this method doesn't catch that because it shows as coming from the fake feat/tool. Is there a way to catch that one last change it needs to be all correct?