Generate neuroglancer config for all tomograms

[manasaV3]

Generate neuroglancer configs for all tomograms, even if they're not default. This will help users with being able to visualize all the tomograms before downloading them.

For s3 import

• Remove check in neuroglancer config generation. (https://github.com/chanzuckerberg/cryoet-data-portal-backend/blob/main/ingestion_tools/scripts/importers/visualization_config.py#L37)
• Update how neuroglancer path is added to the tomogram metadata (https://github.com/chanzuckerberg/cryoet-data-portal-backend/blob/2bad245f8ca41f5950de74a35401252ef0592830/ingestion_tools/scripts/importers/tomogram.py#L142)

For v1 api db import

In the db_import, set the neuroglancer_config to None for tomograms that have is_visualization_default= false.

This is required because the v1 api does not support is_visualization_default field that is used by frontend to identify the tomogram to be displayed in the single dataset page.

For v2 api db import

No changes are required for db_import.

[junxini]

HOLD for now: Jun to surface to design first