First migration version for D10.3 / D11.

- Issue #3443756 by nicxvan, fgm: Update cSpell configuration to ignore fixtures.
- Issue #3445550 by fgm: test the core to contrib upgrade path.
- Issue #2984445 by PQ, fgm: InvalidArgumentException thrown in statistics_tokens if the node has never been viewed.
- Issue #2616330 by mallezie, fgm, stefank, Wim Leers, yogeshmpawar, andypost, smustgrave, pooja saraah, mohit_aghera, _pratik_, dawehner, timmillwood, alexpott, catch: statistics.php can exit early and prevent output error.
- Issue #3437376 by fgm: support both core 10.3 and 11.0.
- Issue #3437150: fix tests broken by the config split.
- Issue #3437136 by fgm: convert QA to Gitlab CI.

Version 1.0.1 is the equivalent of the version in Drupal core 10.3.x, adapted for contrib.