📅 Custom DateTime and Identity Input

[m0nikaza]

Because our File Manager is built on top the Headless CMS code, it also can use the same custom DateTime and Identity input functionality.

The main difference here is that the File Manager does not have the publishedOn and ownedBy fields. The reason behind that is that the File Manager does not have the concept of revisions, so there is no need for the publishedOn and ownedBy fields.

Basically, our users can now send their own createdOn and savedOn DateTime values, and their own createdBy and modifiedBy Identity values when creating a file or updating the file.