[WIP]: Add DINO on 3.x

[Li-Qingyun]

Motivation

Implement the results in the paper "DINO: DETR with Improved DeNoising Anchor Boxes for End-to-End Object Detection" with mmdetection. The original code has released.

Remark

This is my first time to submit a PR to reproduces an algorithm, and I'm still lack of experience. I hope that developers who pay attention to this PR can comment more problems in my implementation and share some results. I will also follow up and share some of my own experimental results and progress arrangements.

I have created a PR #8362, which implemented DINO on dev-2.x. This PR is actually a refactor of the previous DINO implementation for dev-3.x and the praevia refactor PR #8763.