Issue #3464510 by heddn: Gitlab CI yml

.cspell_unrecognized_words.txt

.gitlab-ci.yml

README.md

assets/language_suggestion.css

assets/language_suggestion.js

composer.json

language_suggestion.module

src/Controller/LanguageSuggestionController.php

src/Form/LanguageSuggestionMappingForm.php

src/Form/LanguageSuggestionSettingsForm.php

src/Form/NegotiationHTTPHeaderForm.php

...gin/LanguageNegotiation/LanguageNegotiationHTTPHeader.php

tests/src/Functional/LanguageSuggestionTest.php