SPRINGFIELD — One of the nation’s largest mass torts firms is taking the opioid crisis to court.Simmons Hanly Conroy LLC has filed actions against several drug companies and doctors across the country, alleging fraudulent marketing of painkillers that have spurred a national drug epidemic.One of its latest claims is on behalf of Kankakee County. The lawsuit, filed last week in Illinois’ 21st Judicial Circuit Court, alleges several companies were behind a “a coordinated, sophisticated and highly …