Changed the naming convention referencing Interferometric pairs (Not backward compatible)

Note that this release is not backward compatible because of changes made to the interface language.

What's new in this release:

1. Diversity , replaced oppressive language

   • "master" has been replaced with "reference"
   • "slave" has been replaced with "secondary"
   • renamed the github's "master" branch to "main"

2. SAOCAM support
   A support for SAOCAM stripmap sensor has been added

3. stripmapStack:

   • exposed multiple options: --polarization, --filter_strength of "0" and --unw_method of "no"
   • call gdal2isce_xml.py inside runMultilook() if xml file missing

4. topsStack

   • use 2 digit number in run_files to better sort 10 or more steps
   • fixed orbit downloads

5. improvements to rtcApp.py:

   • Added the geocoding step.

6. Several bug fixes:

   • gdal2isce_xml: move code from main() to sub-function
   • unused "formslc includes" were removed

7. alos2App.py and alos2burstApp.py

   • minor bug fixes

8. cuDenseOffsets

   • exposed multiple options at python level

9. mdx

   • linking order and flags are fixed

other minor bug fixes.