Contacts: adaptive icon

Squashed with the following:

Author: Joey <joey@lineageos.org>
Date:   Mon Mar 19 15:28:18 2018 +0100

    Contacts: update splash screen to match the new icon

    Change-Id: I6963ffcfe62082e4a272cbafe1e23c7b3a6366d1
    Signed-off-by: Joey <joey@lineageos.org>

Author: Nolen Johnson <johnsonnolen@gmail.com>
Date:   Thu Sep 12 18:25:35 2019 +0000

    Contacts: Up minimum SDK to 26

    * Adaptive Icon won't work on anything sub-26.

    Change-Id: Ie1bda5d4b382d568fd20a4a3dea3aacb7631cc9e

Change-Id: Ibacea76eb0f6fdbfacd04bdb82649fe0b9d78f6f
Signed-off-by: Joey <joey@lineageos.org>