Restructuring jFEX to reduce a bit the running time
This MR is meant to reduce the running time in about 100 ms per event.
- Reading the root pileup file can be done just once
- Central Taus and central Jets are now under the same loop
- Fwd jets and taus are under the same loop too
- Removed unnecessary output collection writing, since EDMs are already implemented, (worth to check them over the output collection)
Checked the EDM output and remains the same no modification, so transparent to L1Topo