Create more specific permission system

[SirusCodes]

I love how Appwrite handles permissions and its teams feature but the only improvement I would like to see is that there should be more control over how permissions are given.
Currently, you can only do read and write permissions.
There could be a case where we might want to allow users to create but not update or delete data. So splitting write to create, update and delete would be a great deal for a lot of us.