Creamy Tomato Soup

Name: Creamy Tomato Soup
Ingredients: ¼ cup (½ stick) unsalted butter; 10 sprigs thyme, tied together; 1 medium onion, thinly sliced; 2 garlic cloves, thinly sliced; ¼ cup tomato paste; 2 28-oz. cans whole tomatoes; 1–2 teaspoons sugar, divided; ¼ cup (or more) heavy cream; Kosher salt and freshly ground black pepper