VPP: unify List host's software and List my device's software response payload

[mna]

#19880 part 3 of the ticket

NOTE that this targets #20483, which must be merged first.

Checklist for submitter

• Input data is properly validated, SELECT * is avoided, SQL injection is prevented (using placeholders for values in statements)
• Added/updated tests

[codecov]

Codecov Report

Attention: Patch coverage is 71.87500% with 9 lines in your changes missing coverage. Please review.

Please upload report for BASE (feat-vpp-apps-18867@0f9a549). Learn more about missing BASE report.

Files	Patch %	Lines
server/datastore/mysql/software.go	71.87%	8 Missing and 1 partial ⚠️

Additional details and impacted files

@@                  Coverage Diff                   @@
##             feat-vpp-apps-18867   #20519   +/-   ##
======================================================
  Coverage                       ?   37.19%           
======================================================
  Files                          ?     1423           
  Lines                          ?   134100           
  Branches                       ?     3198           
======================================================
  Hits                           ?    49883           
  Misses                         ?    79695           
  Partials                       ?     4522           

Flag	Coverage Δ
backend	35.77% <71.87%> (?)

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