Perform MintPy processing for non-InSAR pixel offset data

[forrestfwilliams]

Description of the desired feature
Projects such as cosi-corr and autoRIFT provide pixel offset data that could benefit from the timeseries analysis and small baseline inversion functionality of MintPy. MintPy can already process pixel offset data that is associated with some InSAR processors, but it is not currently set up to load and process data from stand-alone pixel offset tracking softwares.

Is your feature request related to a problem? Please describe
No

Describe the solution you'd like

• Create prep_*.py scripts for each software
• Create a separate pixeloffsetApp.py script that only includes steps that are relevant to pixel offset data.
• Create documentation detailing the use of these new scripts.

Describe alternatives you have considered

• Since results from most of these softwares are outputted as geotiffs, we could create a more general prep_offset.py script
• This workflow might be too niche to create a separate pixeloffsetApp.py script

Additional context
None

Are you willing to help implement and maintain this feature? Yes/No
Yes

[yunjunz]

Thank you for bringing this up @forrestfwilliams. I am not very familiar with the various choices of software and data (SAR and optical) for offsets but am very curious to see how it goes.

Your proposed solution looks good to me. I think starting with a software-specific name is good, we could always rename it in the future whenever it's ready to handle more generic data.

Having a separate workflow script for pixel offset is a good idea. Since it can be totally independent of the rest of the mintpy, developing and maintaining it (free from commit conflicts) will be easy either in mintpy repo or any other private/public repo you prefer.