Unique item properties #8

Hi! I'm using this lib and it would be of great help in some use cases here for us to have this feature:

https://www.npmjs.com/package/ajv-keywords#uniqueitemproperties

For that, it is needed to add the ajv-keywords package inside the validator (you can add the entire package or just some of its features). It is possible to have this feature implemented in this lib? Thanks in advance!