Create a singular pagination dto class to avoid duplication

[chrispinkney]

We have...

  @IsInt()
  @IsOptional()
  per_page = 10;

  @IsInt()
  @IsOptional()
  page_number = 0;

in a few places now (user, movie, list), it'd be a good idea to create a single dto file somewhere and call it instead of doing this 3 times.

[manekenpix]

@chrispinkney I can't remember, was this done in one of your recent PRs?

[chrispinkney]

@manekenpix No, I think we talked about it but I forgot to implement it 😋