Firefly-1931: alpha support for asdf file format

[robyww]

Firefly-1931: asdf file alpha support

• alpha - only data under roman node, only uses roman layout
• supports images and tables created by astropy

Reviewer notes.

• All of the work is done in ASDFUtil.java, the other file have only have small change to recognize the ASDF files.
• Strategy
  • Images: convert the ASDF image data to a FITS file
    • this happens at the same place we deal with compressed files.
  • Tables: read directly from the ASDF files

Testing

• https://fireflydev.ipac.caltech.edu/firefly-1931-asdf/firefly
• download an ASDF file and upload into firefly
• use any ASDF from: https://stsci.app.box.com/s/aarfz7sktz6zrhpvz1763avcbzcs3ch2/folder/356233144630
• I have only tested with the ones in Box above, I am not sure others would work but we should try them.

[ejoliet]

Exciting to see this and test it.
Before i do, do you know the versions of ASDF, Roman data-models and RAD you are supporting?
https://github.com/spacetelescope/roman_datamodels

Thanks!

[robyww]

@ejoliet I can only tell you what is in the asdf file.

Here is the yaml part of one of the asdf files we are using. I see so many different versions in it!

asdf-header.yaml.gz