By Wilton Jackson The Lakers will unveil a special championship banner to commemorate winning the NBA’s inaugural in-season tournament during their next home game against the Knicks on Dec. 18. Previously, the Lakers asserted the franchise’s stance that only NBA championship banners would be raised in their home arena. The IST banner will be different from the franchise’s NBA title banners hanging inside Crypto.com Arena, according to ESPN’s Dave McMenamin. The add-a-year, in-season tournament banner will be a different shape and color. It will also be the franchise’s only edition of this bann…