This mofifies the appspawn service to start after the samgr one with a 2
seconds delay.

Signed-off-by: Thierry Escande <thierry.escande@huawei.com>

This is initial work on splitting up OpenHarmony 3.1 components into individual
packages, and integrating the services of these as systemd services.

It is not complete, as we are shifting focus to OpenHarmony 3.0(.1) for now.

Signed-off-by: Esben Haabendal <esben.haabendal@huawei.com>