[booster] refactor all dp plugins

[ver217]

Overview

We already had some dp fashion plugins: TorchDDPPlugin, LowLevelZeroPlugin and GeminiPlugin. These plugin have some common features, like dataloader creation. We can extract these features to a base class.

Wanna track the development progress? Take a look at

proposal: #3046
project kanban: API Refactoring

Goal

Write a base class for all dp fashion plugins and update unit tests.