Add boolean type to Series.in/2

[miXwui]

This PR fixes the inability to compare two series with boolean type for Series.in/2.

Addition to: #420

Comparing two series of boolean types like so:

left = Explorer.Series.from_list([true, false])
right = Explorer.Series.from_list([false, false, false, true])
Explorer.Series.in(left, right)

Resulted in:

** (ErlangError) Erlang error: :nif_panicked
    (explorer 0.5.0) Explorer.PolarsBackend.Native.s_in(#Inspect.Error<
  got FunctionClauseError with message:

      """
      no function clause matching in Explorer.PolarsBackend.Shared.apply_series/3
      """

  while inspecting:

      %{
        __struct__: Explorer.PolarsBackend.Series,
        resource: #Reference<0.82471402.537788432.41151>
      }

Whereas now it correctly results in:

#Explorer.Series<
  Polars[2]
  boolean [true, true]
>

Please let me know if I should add some extra tests (I'm not sure if it'll be unnecessary noise and to where exactly).

Thanks!

[philss]

Please let me know if I should add some extra tests (I'm not sure if it'll be unnecessary noise and to where exactly).

We could add some tests to the series_test.exs file, but since there is none, let's merge this.

Thank you! 💜