Less than a year after opening, a Middlesex County Mexican-cuisine restaurant has claimed the world record for having the largest tequila collection. Meximodo Cocina Mexicana & Tequila Bar in Metuchen was officially awarded the Guinness World Record on Wednesday for having the world’s largest agave spirits collection. The colorful, lively restaurant broke the record with over 1,000 bottles of tequila and mezcal from brand names spanning the entire alphabet. The collection — ranging from small, family-owned brands sourced from Mexico to larger well-known labels — took months to gather and itemi…