[FEATURE] ReTicker heads-up notification.

[baklim]

Describe the feature

It would be nice to have "less invasive" aka ReTicker heads-up notifications in Iconify.

Why would it be useful to add?

ReTicker is more compact imlementation of heads-up notifications.

Example(s)

Implemented in crDroid, Alphadroid, Rising OS,Spark OS and Bananadroid

Additional context

No response