KAZOO-891: Bulk API to add/move/delete numbers
KAZOO-891: Fix update & add specs
KAZOO-890: Add created and updated date on phone_numbers update fields name
KAZOO-890: Add new field to phone_numbers doc (for each number) "used_by" (which whapp is using the number).
KAZOO-890: Add specs
KAZOO-890: Track assignment om callflow number
KAZOO-890: Track assignment on trunkstore
KAZOO-890: Add "owned" feature if numbers is owned by the user