Merge branch 'feat-quiqqer-v2' into 'dev'

.gitignore

.phive/phars.xml

ajax/backend/independent/create.php

ajax/backend/independent/get.php

ajax/backend/independent/getItemName.php

ajax/backend/independent/getItemTitle.php

composer.json

phpstan-baseline.neon

phpstan.dist.neon

src/QUI/Menu/AbstractMenu.php

src/QUI/Menu/Controls/FloatedNav.php

src/QUI/Menu/Controls/Tabs.php

src/QUI/Menu/DropDownMenu.php

src/QUI/Menu/Elastic.php

src/QUI/Menu/EventHandler.php

src/QUI/Menu/Independent/Factory.php

src/QUI/Menu/Independent/Handler.php

src/QUI/Menu/Independent/Items/AbstractMenuItem.php

src/QUI/Menu/Independent/Items/Anchor.php

src/QUI/Menu/Independent/Items/Site.php