Add filtering issues by epics to the epics finder
We want to filter issues by epics. This is the first backend iteration. Issues will be filtered only by the direct parent epic, subepics won't be taken into account.
Part of #9029 (closed)
We want to filter issues by epics. This is the first backend iteration. Issues will be filtered only by the direct parent epic, subepics won't be taken into account.
Part of #9029 (closed)