Export Task's project Board

[Jihed525]

Is your feature request related to a problem? Please describe.
It takes very long time to get a tasks project board items to be stored in an excel sheet in order to share it with users that don't have access to it ( case of process requests on which collaborators doesn't have an overview of other users requests )
it takes to be display task details one by one to get all information

Describe the solution you'd like
provide an excel export feature allowing to export tasks in excel sheet having task id/title/description/labels/creation date/last update/status/priority/assignee/collaborators/start date/end date/completed(true/false)