Updates to PDS4 branch (#4505)

* Initial isisimport application  (#4470)

* Initial isisimport application modeled to work on importing tgocassis images

* Add template to toisis

* Draft cassis template file added to pds4 branch (#4472)

* Initial isisimport application modeled to work on importing tgocassis images

* Add template to toisis

* actual cassis label template

* Reverted accidently modified template

* Add new locations of import and export templates and update cmake accordingly (#4477)

* Update cmake to new locations of import and export templates

* Fix mixed tabs and spaces

* Removed topds4 directory from CMakeLists

* Updates XmlToJson parsing to be more inja-friendly (#4478)

* Updates XmlToJson parsing to indicate XML attributes and text values in a way friendly to inja parsing of the json

* Update XmlToJson tests

* Tgocassis Template Completed for Instruments and Archive Groups (#4481)

* Updates to cassis label template

* Further updates to cassis template

* Updates to accomodate PR 4478 changes

* Cassis template completed for Instrument and Archive Groups.

* Generalize PDS4 cube creation setup (#4485)

* Updates XmlToJson parsing to indicate XML attributes and text values in a way friendly to inja parsing of the json

* Update XmlToJson tests

* Generalized line/sample/band setup

* PDS4PixelType as a callback, TEMPLATE default option, and working TGOCaSSIS.tpl (#4479)

* Cassis Template Updated BandBin and AlphaCube Groups (#4482)

* tgocassis Template Completed for AlphaCube and BandBin groups

* Additional template cleanup

* Updated Pixels Group

* Removed core object from template.

* protect template search and improve TGOCASSIS template (#4486)

* Renamed topds4 to isisexport (#4488)

* Updates to Cassis Template and XML and Minor corrections to isisimport (#4490)

* Updates to cassis template. Corrections to isisimport to allow module tests to work properly.

* Added disclaimer to xml file.

* Added mapping group template file (#4492)

* Added checks for existing keywords to be able to export an imported tgo image

* Added separate mapping group translation file

* Callbacks for YearDOY and ConvertUniqueIdtoObservationId (#4491)

* isisimport can now default to correct template using a file template. Updated Cassis template name. Minor updates in isisimport. (#4493)

* Updates mapping group in template. Added callback to handle added Z to StartTime. (#4495)

* PDS4 - Fix template search and targetGroup template variable for tgocassis.tpl (#4494)

* fix template search and targetGroup template variable for tgocassis.tpl

* remove accidental extra tag

* address feedback from amy

* Updated export template to produce parsable xml (#4497)

* Updated export template to be functioning xml to be used in isisimport.

* Added back 3D_Array but left in comments.

* Adds tests with test data and fixes off-by-one error in isisimport (#4502)

* Added intial working section of tests

* Update test with test data and fix off-by-one in isisimport

* Add test input image

* Clean up from old design of test

* Updated based on feedback

* Moved local function into ISIS namespace

* Ticked ISIS version to 6

* More tick to 6

* Updated CHANGELOG

We don't add the 6.0.0 heading until just before the actual release. I also added some missing periods.

Co-authored-by: Amy Stamile <74275278+amystamile-usgs@users.noreply.github.com>
Co-authored-by: Tim Giroux <62255438+tgiroux@users.noreply.github.com>
Co-authored-by: Stuart Sides <ssides@usgs.gov>
Co-authored-by: Kaitlyn Lee <kdl222@nau.edu>
Co-authored-by: Jesse Mapel <jmapel@usgs.gov>