ci: move pvsStudio job to its own workflow & use new flag

[piponazo]

The license will expire in approximately 1 month. I disabled the expiration check for the moment.

Actually my plan is to disable this workflow by following this guide afterwards:
https://docs.github.com/en/enterprise-server@3.2/actions/managing-workflow-runs/disabling-and-enabling-a-workflow

At the moment we are not benefinit from running PvsStudio on CI, because we are not analysing the results from the PVS Studio report automatically. The issue #2074 describes some of the ideas we could apply there. Until that work is addressed I think it will be better to disable this workflow.

[codecov]

Codecov Report

Merging #2210 (a28207c) into main (941017d) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #2210   +/-   ##
=======================================
  Coverage   63.30%   63.30%           
=======================================
  Files         116      116           
  Lines       19600    19600           
  Branches     9545     9545           
=======================================
  Hits        12408    12408           
  Misses       5117     5117           
  Partials     2075     2075           

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