This PR updates existing backends to implement the `IRenameEnabledBackend` interface, allowing for more efficient file renaming operations. The implementation varies by backend, with some using native rename operations and others falling back to copy-and-delete patterns.
This adds support for using an API key with Filen to work with an MFA protected account
The webmodule needs to be integrated into ngclient, so the user can simply click the button and get the api-key assigned.
