Contact Info Widget: add name and image attributes

Related PR: #7850

#### Steps to reproduce the issue

1. Add a Contact Info Widget to your sidebar, and fill in all fields.
2. Use Google's testing tool, https://search.google.com/structured-data/testing-tool/u/0/ , to check the site URL.

You will receive the following warnings:

To solve this issue, we would need to:
1. Add the `name` attribute, maybe using a new widget field named "business name"
2. Add the `image` attribute by adding a new field allowing one to add a business logo to the widget.

Reported in 892360-hc

Start by reviewing related PR #7850 and the Contact Info Widget implementation it targets, then reproduce the warnings with Google's structured-data testing tool using the steps in this issue. Done means the widget provides the requested business name and logo information and the testing tool no longer reports the listed name and image warnings.

Written by the indexing model from the issue text.