Bug 29002: Add bookings table

Bug 29002: Add bookings table

This patch adds a new bookings table to store booking details.

Test plan
* Confirm that kohastructure and the atomicupdate match such that an
  install or upgrade result in the same table being present on the
  system.

Sponsored-by: PTFS-Europe
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Janet McGowan <janet.mcgowan@ptfs-europe.com>
Signed-off-by: Caroline Cyr La Rose <caroline.cyr-la-rose@inlibro.com>
Signed-off-by: Laurence Rault <laurence.rault@biblibre.com>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>