To make the create method more consistent with the
guidelines,
this commit removes the default value from the `syncSource` parameter.
An Identity will be created as sync source,
when the associated account is created using an external provider.
Signed-off-by: David Mehren <git@herrmehren.de>
This was done to give better typings to the function signatures of entities `create` methods.
It also ensures that each field that should be set to `null` is set to `null` and doesn't leave that up to the typeorm handlers.
See: #1641
Signed-off-by: Philip Molares <philip.molares@udo.edu>
