DO NOT MERGE: Move archive support library to DocumentsUI.

This if the first step. The tests are not moved, and the original
support library is not deleted yet.

Besides, the new files are basically copy paste.

Change-Id: Ifaac019de00f2d00fe1a69f9a69e62b4d3602c24
Test: Not yet, but coming.
Bug: 31783726
(cherry picked from commit c88c5884)