Ethan Shanfeld Before Instagram, Snapchat and TikTok, Carly Shay (Miranda Cosgrove) was the original influencer, racking up internet views, producing skits with co-host Sam Puckett (Jennette McCurdy) and booking some of pop’s biggest acts to perform on her web show “iCarly.”From spaghetti tacos to PearPhones, Gibby (Noah Munck) to T-Bo (Boogie), and Random Dancing to Messin’ with Lewbert, “iCarly” was one of Nickelodeon’s most unique, memorable and successful series.In celebration of the