Add paper about diffusion based RGBD semantic segmentation

[bqm1111]

Paper:
[ICAR2025] Diffusion-based RGB-D Semantic Segmentation with Deformable Attention Transformer
https://arxiv.org/abs/2409.15117
Code:
https://github.com/ntnu-arl/diffusionMMS

[jiangldi]

收到啦！