It’s been 30 years since the Spice Girls first topped the charts with their hit 1996 single “Wannabe.” When the UK Royal Mint released a commemorative coin in March to celebrate, it credited the iconic girl group with defining ‘90s pop culture. Singer-songwriter Melanie C, also known as Sporty Spice, is still keeping busy. She’s a mom, a DJ and a solo artist. Her ninth studio album, “Sweat,” is out Friday.