SE: CLI setup experience changes

[mna]

#22385

Checklist for submitter

• [ ] Changes file added for user-visible changes in changes/, orbit/changes/ or ee/fleetd-chrome/changes. See Changes files for more information.
• [ ] Input data is properly validated, SELECT * is avoided, SQL injection is prevented (using placeholders for values in statements)
• [ ] Added/updated tests
• [ ] Manual QA for all new/changed functionality

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 54.12844% with 150 lines in your changes missing coverage. Please review.

Please upload report for BASE (feat-setup-experience@aaea56d). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
server/service/client.go	51.85%	61 Missing and 17 partials :warning:
server/service/client_scripts.go	12.90%	54 Missing :warning:
server/datastore/mysql/software_installers.go	76.00%	4 Missing and 2 partials :warning:
ee/server/service/teams.go	33.33%	3 Missing and 1 partial :warning:
server/fleet/app.go	42.85%	3 Missing and 1 partial :warning:
server/fleet/teams.go	55.55%	3 Missing and 1 partial :warning:

Additional details and impacted files

@@                   Coverage Diff                    @@
##             feat-setup-experience   #22956   +/-   ##
========================================================
  Coverage                         ?   63.13%           
========================================================
  Files                            ?     1546           
  Lines                            ?   146433           
  Branches                         ?     3644           
========================================================
  Hits                             ?    92451           
  Misses                           ?    46655           
  Partials                         ?     7327           

Flag	Coverage Δ
backend	64.00% <54.12%> (?)

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[mna]

Note that there are no automated gitops tests for the new feature in this PR, I'll add those in a subsequent PR tomorrow (it has been manually tested). Also, setting the VPP apps to install during setup is not implemented for "No team" because VPP apps are not supported for "No team" at the moment - this ticket will track this (released AFAIK) bug: https://github.com/fleetdm/fleet/issues/22970

[mna]

Automated tests added in https://github.com/fleetdm/fleet/pull/23125