Add queryOrList to IHP.QueryBuilder

[amitaibu]

Use would be something like this:

  action ProjectsAction = do
      let values :: [(ProjectType, Int)] = [(ProjectTypeOngoing, 3), (ProjectTypeNotStarted, 2)]

          valuePairToCondition :: (ProjectType, Int) -> QueryBuilder "projects"
          valuePairToCondition (projectType, participants) =
              query @Project
                  |> filterWhere (#projectType, projectType)
                  |> filterWhere (#participants, participants)

          theQuery = queryOrList (map valuePairToCondition values)

      projects <- fetch theQuery
      render IndexView { .. }

[amitaibu]

@mpscholten can you please give some pointers. Maybe I can give it a first try