This is not "glow" it's Pulse

It's illiterate to call this "glow", nothing to do with actual glow effect.

### glow

https://github.com/AmirJabbari/flutter-glow
https://github.com/saschta/flutter_glowy_borders

### pulse
https://www.geeksforgeeks.org/pulse-animation-view-in-android/
https://github.com/booncol/pulsator
https://github.com/gskinner/flutter_animate
