Legal Rhode Island sports betting by the end of this Thanksgiving week! Six months after the US Supreme Court ruled to allow the adoption of sports betting by any state, Rhode Island is among a vanguard of jurisdictions that have legalized it, eager for what could be a significant source of new tax revenue. With Massachusetts and other northeastern neighbors still debating the issue, Rhode Island lawmakers this summer approved sports betting at the state’s casinos, Twin River and Tiverton Casino Hotel. It’s a cautious first step. Rhode Island won’t allow remote betting from computers and phones. Next year, though,…