Add rank_stabilized for networks

[rockerBOO]

https://arxiv.org/abs/2312.03732
https://huggingface.co/blog/damjan-k/rslora

Inspired by KohakuBlueleaf/LyCORIS#172

Usage

network_args=["rank_stabilized=True"]
--network_args rank_stabilized=True

Maybe rs_lora would be better to replicate what is on LyCORIS but I thought the full name would be clearer when viewing configuration.

[recris]

Does the scale in apply_max_norm_regularization also have to be changed to work correctly?

[rockerBOO]

@recris good point, there is a scale value in there. I will update it and test.