CreateInitialRevison should create an initial revision when user and date are provided

[anudeepsamaiya]

In the current implementation, we can input comments when using createinitialrevision management command. It would be useful to have the ability to pass user_id/username and date for initial revision while calling the management command.

[etianen]

I don't understand this feature request.

[anudeepsamaiya]

so like
./manage.py createinitialrevisions your_app.YourModel --comment="Initial revision."

it woud be useful to have
./manage.py createinitialrevisions your_app.YourModel --comment="Initial revision." --username="some_username" --date="28/09/2020"

[etianen]

That's a good feature. The date arguments would probably want to be: ``` --user=<username> --date-created=<iso timestamp> ``` to match the model field names.