feat: twig template loaders

...docs/features/asset-bundling-esbuild/preloading-assets.md

docs/pages/docs/features/http/interceptors.md

docs/pages/docs/features/security/content-security-policy.md

docs/pages/docs/features/templating/php-templates.md

docs/pages/docs/features/templating/twig/index.md

...ages/docs/features/templating/twig/rendering-templates.md

docs/pages/docs/features/templating/twig/template-loaders.md

docs/pages/docs/features/translations/index.md

docs/pages/tutorials/session-based-authentication/index.md

src/Attribute/TwigLoader.php

src/SingletonCollection.php

src/SingletonFunctionParametersIterator.php

src/SingletonProvider/TwigChainLoaderProvider.php

src/SingletonProvider/TwigEnvironmentProvider.php

src/TwigApplicationFilesystemLoader.php

src/TwigChainLoader.php

src/TwigOptionalLoaderInterface.php