Merge branch '3440375-cut-a-2.x' into '8.x-1.x'

.gitlab-ci.yml

composer.json

diff.api.php

diff.info.yml

diff.install

phpcs.xml

phpstan-baseline.neon

phpstan.neon

src/Annotation/DiffLayoutBuilder.php

src/Annotation/FieldDiffBuilder.php

src/Controller/NodeRevisionController.php

src/Controller/PluginRevisionController.php

src/DiffBuilderManager.php

src/DiffEntityComparison.php

src/DiffEntityParser.php

src/DiffFormatter.php

src/DiffLayoutBase.php

src/DiffLayoutInterface.php

src/DiffLayoutManager.php

src/FieldDiffBuilderBase.php