Mark-Paul Gosselaar and Breckin Meyer are not lawyers. But they are about to play a pair on TV. In the series “Franklin & Bash,” which debuts June 1 on TNT, Gosselaar (“NYPD Blue,” “Saved by the Bell”) and Meyer (“Clueless,” “Road Trip”) play best friends and L.A. lawyers who often resort to unconventional tactics in the courtroom.