Extended Menu._run() with clear_terminal=True and title=True keywords.

The keywords can be set to false to allow 'enchained' printing of menus one
after the other.

The use case here is for autoediting nested objects.

Example:

    Abjad IDE - materials - talea rhythm maker (Bača) (EDIT)

       1: talea (t): Talea(counts=(1, 2, 3, 4), denominator=16)
       2: split divisions by counts (sdc):
       3: extra counts per division (xcd):
       4: beam specifier (bs):
       5: burnish specifier (rs):
       6: duration spelling specifier (dss):
       7: tie specifier (ts):

          done (done)
          set to none (none)

    |> 1

       1: counts (c): (1, 2, 3, 4)
       2: denominator (d): 16

          done (done)
          set to none (none)

    |>