Jem Aswad Senior Music EditorAs the omicron variant continues to delay the return to normal, Las Vegas is becoming a half-step along the way back to live entertainment — and a day after the Grammy Awards announced their move to Vegas for 2022, Bruno Mars and Anderson .Paak’s Silk Sonic are the latest act to unveil a residency in the city.The duo announce in the wee hours of Wednesday that they will launch a residency beginning on Feb. 25 at Dolby Live as part of “An Evening With Silk Sonic” — and look at that, the run concludes the night before the Grammys, which makes it seem likely the group will at the very least attend the show, where they’re up for Record of the Year and Best R&B Performance.