Vegan Stir Fry Udon Noodles

Name: Vegan Stir Fry Udon Noodles
Ingredients: 1½ tablespoons Chili Garlic sauce; ¼ cup Soy sauce ( (light)); 1½ tablespoons Rice Vinegar; 1½ teaspoons Ginger paste; 1½ teaspoons Minced Garlic; 1 tablespoon Sesame Oil; 2 tablespoons Hoisin Sauce; 1 tablespoon Sesame seeds; 2 tablespoons Brown sugar ((or Maple syrup)); 1 teaspoon Chili flakes; 2 tablespoon Avocado Oil ((or any Vegetable oil)); 14 oz Soft vacuum-packed packet of Udon noodles; 1 medium Chopped Onion; 1 medium Red Bell Pepper ((cored, seeded and thinly sliced)); 4 oz Sliced Shiitake Mushrooms; 3 small Thinly Sliced Bok Choy stems; - - Sesame seeds; - - Scallions/Spring Onions