Add separate Email field to the Profile contacts [Low Priority]

[AnastasiiaLutsykiv]

As a registered user,
I want to be able to provide a separate email as a contact,
so that the contact email can be different to my email used during the registration.

Acceptance criteria

1. Email field in the "Контакти" page should be separate from the email provided during the registration.
2. Title next to the field should be "Електронна пошта компанії"
3. Email from "Контакти" page should be auto-populated with the email used during the registration.
4. It should be editable.
5. It cannot be left empty.
6. Validation: it must include "@", "." and 2 symbols after the dot.
7. This separate email should be displayed when the user press on "Показати ел. пошту" button in the Company profile view page.

Linked epic: #6