Directories should also have the correct mtime set and not the current
time. For this the `Streamer` class needs to support passing a time
attribute for creating folders, the underlying library already supports
this.
Signed-off-by: Ferdinand Thiessen <opensource@fthiessen.de>
This is required to not break behavior on zip download (apps should be able to react to zip download especially for shares).
Signed-off-by: Ferdinand Thiessen <opensource@fthiessen.de>