If there are two things “Twilight” fans love, it’s Jackson Rathbone and his band, 100 Monkeys. Now, the fan favorite is excited about uniting his two passions in an upcoming film — and giving the Twilight Nation the chance to experience the whole package. “You bet,” he revealed with a smile when we caught up with him recently and asked if his band would be on the soundtrack to his soon-to-shoo…