Issue #2090623 by tstoeckler: Provide support for remote asset libraries

libraries.services.yml

src/ExternalLibrary/Asset/AssetLibrary.php

src/ExternalLibrary/Asset/LocalRemoteAssetTrait.php

src/ExternalLibrary/Asset/SingleAssetLibraryTrait.php

src/ExternalLibrary/ExternalLibraryManager.php

src/ExternalLibrary/ExternalLibraryTrait.php

src/ExternalLibrary/Local/LocalLibraryInterface.php

src/ExternalLibrary/Local/LocalLibraryTrait.php

src/ExternalLibrary/PhpFile/PhpFileLibrary.php

src/ExternalLibrary/Registry/ExternalLibraryRegistry.php

src/ExternalLibrary/Remote/RemoteLibraryInterface.php

src/ExternalLibrary/Remote/RemoteLibraryTrait.php

src/Plugin/libraries/Locator/StreamLocator.php

src/StreamWrapper/LibraryDefinitionsStream.php

src/StreamWrapper/PhpLibraryFilesStream.php

src/StreamWrapper/PrivateStreamTrait.php

tests/library_definitions/test_asset_library.json