Rock Shrimp Lumpia with Green Papaya Salad

Name: Rock Shrimp Lumpia with Green Papaya Salad
Ingredients: 1 red onion, sliced; 2 green papayas, seeded, peeled and shredded; 2 carrots, peeled and shredded; 2 teaspoons Vietnamese garlic-chile sauce; 3 cloves garlic, minced; 3 tablespoons sugar; 2 tablespoons fish sauce; 2 tablespoons rice vinegar; 2 tablespoons freshly squeezed lime juice; 1/4 cup chopped fresh cilantro; 1/4 cup chopped fresh mint; 1/4 cup chopped peanuts, for garnish; 2 pounds peeled rock shrimp; 1 tablespoon peanut oil, plus extra for brushing; 2 1/2 teaspoons Asian sesame oil; 1 (4-ounce) package Japanese rice noodles; 1/2 cup peeled and shredded carrot; 3/4 cup good-quality mayonnaise; 1 teaspoon rice vinegar; 2 tablespoons toasted sesame seeds; 2 teaspoons salt; 1/2 cup chopped fresh cilantro; 12 (7-inch-square) lumpia wrappers; 1 egg beaten with 1 tablespoon water, for egg wash