Add two new endpoints regarding email account reset and account search per email for admins
Regarding Kaymera needs, see https://linphone.atlassian.net/wiki/spaces/KAYMERA/pages/45088779/Authentication+flow
Account email reset
Admin endpoint
GET /accounts/{id}/recover/email
trigger the same email as for the form App\Mail\PasswordAuthentication
Account "search by email"
Admin endpoint
GET /accounts/{email}/search-by-email
search and return a list of accounts from the email address in parameter