Feature:

--app:
1. Add optimizer checkpoint and training resumption support.
2. Add better tensorboard support.
3. Add nerf distortion loss.
4. Support multi-focal in city dataloader.

--dist_render:
1. Support dynamic fetching, a strategy to prefetch and offload parameters for limited GPU memory, to support infinite rendering area.

Bugfix:
1. Fix augments shadow copy bug
2. Delete deprecated dataloader in dist_render
3. Refactor the import way in different modules

Feature:

1.Support GridNeRF Hybrid Parallel Traning with Model Parallel and DDP Training.
2.Support MatrixCity Datasets.
3.Support Real-time Distributed Rendering System.

Bugfix:
1.Fix data splitting bug in colmap2nerf.py.
2.Fix the description of N_vis parameter does not match the actual function.
3.Testview and trainview are distinguished in drone dataloader.
4.Add the xml processing code.

The origin LandMark codebase.