When I google "IROLL20s" I find this on the PoE-Wiki:

"By using the console you can modify various game parameters in Pillars of Eternity and Pillars of Eternity II: Deadfire. However most console commands are classified as "cheats", and the command IRoll20s must first be entered into the console to activate those."

Is that what you mean, whether BG3 gets a similar console and commands? I know of nothing similar in BG3 up to now and I don't recall anything similar mentioned anywhere, though I didn't look for that.