feat: Enhance createList signature

[Quramy]

What

Allow createList (or buildList) to accept 2nd argument as template of list item:

// Create 3 User model records whose `name` is "Bob"
await UserFactory.createList(3, { name: "Bob" });

// Before
interface UserFactory {
  createList(input: numer | readonly Partial<prisma.UserCreateInput>[]): PromiseLike<User[]>;
}

// After
interface UserFactory {
  createList(count: numer, item?: Partial<prisma.UserCreateInput>): PromiseLike<User[]>;
  createList(list: readonly Partial<prisma.UserCreateInput>[]): PromiseLike<User[]>;
}