[New Feature]: test and corresponding dataset for generating interferograms

[LiangJYu]

Checked for duplicates

Yes - I've already checked

Alternatives considered

Yes - and alternatives don't suffice

Related problems

We do not have anything automated to ensure new code pushed to main do not break the ability to correctly generate interferograms from our CSLCs.

Describe the feature request

I need or want:

1. Test code that will run periodically, not with every PR push, to ensure that interferograms generated from CSLCs are correctly formed. Maybe use the dataset
2. Dataset with 2 SAFEs with 4 bursts per SAFE as a 2x2 block so 2 swaths are covered by the 4 bursts.