Support for Django's native DB serializer

[Archmonger]

Feature description

To maximize compatibility, we should support django's own dump and load methods as a new connector that can work with every database type.

We may be able to directly get away with using Django's call_command within our connector. However in the event that...

• This is not possible due to technological limitations or...
• We can add extra efficiency/features by avoiding call_command or...
• We can generate prettier logs with our own methods

... then we will have to dig into the internals of Django's dump/load commands to determine which functions can be utilized within our current infrastructure.

We will want to set this connector as the default for all currently unsupported databases, and add this behavior to the docs.

Previous discussions: #423 #579
Previous PRs: #309

[Archmonger]

Developed in #616