If rogues still get two bonus actions (which I doubt):
Multiclass War Cleric 1/Rogue 1/Fighter 5. That should give you 6 attacks per round (with action surge).
In Early Access 3rd level Rogues who choose the Thief subclass get 2 bonus actions per round.
War Clerics in PnP can attack with their main hand using their bonus action WIS modifier times per long rest.
To do as you imagine you can drop the War Cleric, as it doesn't give you an extra bonus action, and choose:
Rogue 3(Thief)/Fighter 5
That would give you 4 attacks every round and a nova round of 6 attacks when you action surge.
If you chose the two weapon fighting style for you Fighter that would dish out a lot of damage.