Opening virtual datasets (dmr-adapter)

[ayushnag]

• [x] Closes #605
• [x] Fix scale_factor, add_offset bug
• [x] Find precise permissions URL (not DAAC general)
• [x] Add docs
• [x] Unit tests. Update current test to test specific portions of the virtual dataset and also test the numpy/dask loaded dataset
• [x] Check indirect access support
• [ ] Update earthaccess documentation
• [x] Use updated virtualizarr version (with numpy 2.0 manifest)

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📚 Documentation preview 📚: https://earthaccess--606.org.readthedocs.build/en/606/