[TASK] Integrate sqlite acceptance testing

Add support for sqlite acceptance testing to
'Build/Scripts/runTests.sh'.

Run acceptance/sqlite testing with PHP 8.1 in nightly
as a first execution implementation, which could be
reshuffled when minimum PHP requirements have
been decided.

Furthermore two acceptance tests are marked as skipped
when executed with sqlite, which should be fixed in
dedicated patches:

* MaintenanceCest.php->analyzeDatabaseStructureWorks()
  Skipped, as database compare is never clean and ends
  in endless loop with sqlite, when ext:indexed_search is
  installed. This is a general issue, existing at least
  since v10.4. Needs investigation and a dedicated patch.

* UpgradeCest.php->seeUpgradeWizard()
  Skipped, as utf-8 charset upgrade wizard is not visible
  for sqlite dbms backend, thus rendering this test obsolete
  with sqlite. Needs another update wizard test and possibly
  a dedicated patch.

Resolves: #96340
Releases: main
Change-Id: I74c8f1156d98a5419309e110ed761e3de21fa37a
...