RFC: Add `source` to `createSelection`

[Kelin2025]

Case

Currently createSelection doesn't support source. But sometimes you need to filter stuff based on some dynamic proprties
There's createSwitch but it doesn't cover all cases

Solution

Add source to createSelection

const $users = createListApi({ ... })

const $valueTreshold = createStore(10)

const $richUsers = createSelection($users, {
  source: $valueTreshold,
  fn: (user, treshold) => user.ethValue >= treshold
})