When a project gets added to a QF round partway through the round, any otherwise eligible donations they got since the round start date should be added to QF

[laurenluz]

Sometimes projects get added to the round late, or sometimes we add a new "eligible" chain for QF.
We want to ensure that all the donations to qf-eligible projects on qf-eligible chains from the round start date to the round end date are included in the calculation of the matching.

This issue to to create an automated way by which all those donations are maked as "qf" if they are on a qf-eligible chain and after the round start date, regarless of when a project is added to the round.

@CarlosQ96