Add mailbox-android base

README.md

mailbox-android/.gitignore

mailbox-android/.tx/config

mailbox-android/artwork/bluetooth.svg

mailbox-android/artwork/empty_state_blog.svg

mailbox-android/artwork/empty_state_contact_list.svg

mailbox-android/artwork/empty_state_forum_list.svg

mailbox-android/artwork/empty_state_group_list.svg

mailbox-android/artwork/ic_emoji_emoticons.svg

mailbox-android/artwork/logo_circle.svg

mailbox-android/artwork/logo_horizontal_white.svg

mailbox-android/artwork/logo_no_text.svg

mailbox-android/artwork/logo_vertical_black.svg

mailbox-android/artwork/navigation_drawer_header.svg

mailbox-android/artwork/navigation_drawer_header_night.svg

mailbox-android/artwork/notification_ongoing.svg

mailbox-android/artwork/qr_code.svg

mailbox-android/artwork/qr_code_error.svg

mailbox-android/artwork/trust-indicator.svg

mailbox-android/build.gradle