Merge pull request #16613 from nextcloud/enh/featurepolicy

lib/composer/composer/autoload_classmap.php

lib/composer/composer/autoload_static.php

lib/private/AppFramework/DependencyInjection/DIContainer.php

...Framework/Middleware/Security/FeaturePolicyMiddleware.php

lib/private/AppFramework/OCS/BaseResponse.php

lib/private/Security/FeaturePolicy/FeaturePolicy.php

lib/private/Security/FeaturePolicy/FeaturePolicyManager.php

lib/public/AppFramework/Http/EmptyFeaturePolicy.php

lib/public/AppFramework/Http/FeaturePolicy.php

lib/public/AppFramework/Http/Response.php

lib/public/AppFramework/Http/TemplateResponse.php

lib/public/Security/FeaturePolicy/AddFeaturePolicyEvent.php

tests/lib/AppFramework/Controller/ControllerTest.php

tests/lib/AppFramework/Http/DataResponseTest.php

tests/lib/AppFramework/Http/EmptyFeaturePolicyTest.php

tests/lib/AppFramework/Http/FeaturePolicyTest.php

tests/lib/AppFramework/Http/ResponseTest.php

...ework/Middleware/Security/FeaturePolicyMiddlewareTest.php

.../lib/Security/FeaturePolicy/AddFeaturePolicyEventTest.php

...s/lib/Security/FeaturePolicy/FeaturePolicyManagerTest.php