ScienceMesh: Generate Token: Add trashbin

[mmattel]

It would be great if we could have a trashbin deleting an invite token and not only let him expire.

Usecase: You accidentially gave the token a wrong or no description/email when creating.

@JammingBen

[JammingBen]

@butonic Does the OCM spec include something for deleting invitations?

[tbsbdr]

as long as this is not pentest relevant, I'd keep this on hold https://github.com/owncloud/web/issues/11566#issuecomment-2346153579