Add EDSR and MDSR
### Model description

EDSR (Enhanced Deep Residual Networks for Single Image Super-Resolution) is for image super resolution, here's the [paper](https://arxiv.org/abs/1707.02921).

### Open source status

- [x] The model implementation is available
- [x] The model weights are available

### Provide useful links for the implementation

Official Implementation https://github.com/sanghyun-son/EDSR-PyTorch and https://github.com/LimBee/NTIRE2017

## Your contribution

I'd like to work on incorporating this architecture into the HuggingFace. Please let me know if you think it's worth adding to huggingface.

@NielsRogge can you review this issue so that I can get started
@venkat-natchi
<|||||>I'm going through the paper and the existing implementation. I will open the PR in few days. <|||||>> I'm going through the paper and the existing implementation. I will open the PR in few days.

That's great, I have already gone through the paper and the architecture and started the implementation!<|||||>Sorry, I was away due to festival season here. 
I am done with the paper. Shall I start transforming [this](https://github.com/sanghyun-son/EDSR-PyTorch/blob/9d3bb0ec620ea2ac1b5e5e7a32b0133fbba66fd2/src/model/edsr.py) one into the HuggingFace model standards?<|||||>Go ahead and let me know if you need any help; I will be adding the MDSR model to the hub, and I believe the code should be similar to this [Swin2sr](https://github.com/huggingface/transformers/pull/19784) PR also we can use it for reference.<|||||>Sure, thanks<|||||>Can we add both EDSR and MDSR in this PR?<|||||>No, I guess a separate PR is required.<|||||>Hello, can I work on this issue? Although I'm new to open-source contributions, I've worked on super-resolution models in the past and I was wondering why HuggingFace did not have these. I am familiar with PyTorch.<|||||>Thanks @asrimanth for the interest. 
I have an active PR going on for this issue.
#19952 

Kindly  leave your comments there if you could. 