proxyapi update; rename keycloak -> oidc

.php-cs-fixer.dist.php

CHANGELOG.md

composer.json

composer.lock

src/API/UserSessionInterface.php

src/Auth/ProxyAuthenticator.php

src/Auth/UserSession.php

src/Helpers/Locale.php

src/Locale/Locale.php

src/Logging/LoggingProcessor.php

src/Resources/config/services.yaml

src/TestUtils/TestUserSession.php

tests/Auth/AuthenticatorTest.php

tests/LocaleTest.php