[IMP] crm: detect leads based on similar phone/mobile number

Currently, the 'similar lead detection' mechanism only considers email,
contact name, and partner name while finding duplicate leads in CRM.

After this commit, it will also consider the mobile/phone number for
the same. Note that the mobile numbers and phone numbers both will be
matched with each other while finding duplicate leads.

Task-2817884

closes odoo/odoo#88372

Signed-off-by: Thibault Delavallee (tde) <tde@openerp.com>