Adding LoKrModel Class to paddle.peft library

[WhuanY]

PR types

New features

PR changes

Others

Description

Adding LoKrModel, LoKrLinear and LoKrConfig to support a new lora-like adapter. Current implementation only supports contains Linear Modules. Motivation and discussion on such PR issue is at: https://github.com/PaddlePaddle/PaddleNLP/issues/9226

Please provide suggestions on the current implementation!