is there a UI which can help create the spiceDB schema? For example how permit.io allows https://cdn.discordapp.com/attachments/844600078948630559/1255974089303261195/Screenshot_2024-06-27_at_2.49.51_PM.png?ex=667f1485&is=667dc305&hm=0f29bf0920ecd5180522ca13f1d9a464e6a08eb747a1595b5dc5639ebe91b730&

The spiceDB playground is open source now. Feel free to add feedback on what you are missing there.