Add support for loading 3D points with ODM data processor

[pierotofy]

Hello 👋

this PR adds support for loading 3D points (useful for running splatfacto) from datasets imported from ODM.

Hope this can be useful to others.

[kerrj]

Thanks for the PR! to run linting see here, ns-dev-test will fix the format errors.

I don't have any ODM datasets but do you have any screenshots/renders you could share here?

[pierotofy]

Thanks for the quick review, sorry about the linting!

• Made some changes to make sure the points are in the proper coordinate system (they weren't)
• Ran ruff
• Screenshot of a dataset (brighton beach) I've just processed:

Link to original images: https://github.com/pierotofy/drone_dataset_brighton_beach
Link to nerfstudio data exported with this PR from ODM: https://drive.google.com/file/d/1A8dUyR8_Nroz-4F8FsFDcTlo_0TCIz-4/view?usp=sharing

[kerrj]

thanks!