Usage of terms not present in the vcard vocabulary

[angelo-v]

The shapes as well as the actual implementation in SolidOS uses several terms from vcard vocabulary, that are not present there actually. With no claims of being complete:

• vcard:AddressBook
• vcard:nameEmailIndex
• vcard:groupIndex
• vcard:includesGroup
• vcard:inAddressBook
• vcard:WebId
• probably more...

Are there plans to add them to the vcard vocabulary? What would be the process to do so? Or should there be a new vocab in extension of vcard to include those terms?