Add support for structured address representations (new)

[stephanritscher]

What is it?

• [ ] Bugfix
• [x] Feature
• [ ] Codebase improvement

Description of the changes in your PR

• Merge changes from this fork.
• I only took care of Contacts app so far (PR will follow) and have no idea about other apps affected by these changes (probably Dialer). Feedback/support welcome.

Fixes the following issue(s)

• Needed for https://github.com/FossifyOrg/Contacts/issues/30

Acknowledgement

• [x] I read the contribution guidelines.