Request creating the project, a helper library for the integration with libhomescreen and libwindowmanager.

This ticket is to request creating of the project, libappbridge.

It's purpose is to share the code for integration with libhomescreen and libwindowmanager.

You can take a look at the history from SPEC-1920.

1. Owner name(s), gerrit user ID or email address: Julie Kim, jkim-julie, jkim@igalia.com
2. Project maintainers if different from the Owner: Julie Kim
3. Project name: libappbridge
4. Short project description (1 line): Application Bridge library to help integration with libhomescreen and libwindowmanager.
5. Repo name (if different from the project name): libappbridge

The project is ready at https://github.com/jkim-julie/libappbridge.

The recipes for the project is at https://gerrit.automotivelinux.org/gerrit/#/c/18265/ .