PURPOSE
We want to integrate SMS with crm.lead in the same way it is integrated
with res.partner.
SPECIFICATION
Add phone/SMS widget on 'phone' and 'mobile' to call the same 'Send sms' modal
than on partner. This modal can also be called from the action menu in list
view. This modal should behave the same as for res.partner (same number
selection and warnings). The SMS text message should also be logged in the
chatter (similarly to res.partner)
SMS sent in batch should be logged in the chatter of the corresponding record.
Linked to task 1925950
Part of PR #34864
