ContextObserver class

A reactive widget that rebuilds automatically when any used Observable changes.

It tracks all observables accessed during the widget build phase, and automatically listens to them for changes.

Similar in concept to GetX's Obx or MobX's Observer.

Example usage:

ContextObserver(
  (context) {
    final counter = someObservable.watch();
    return Text('$counter');
  },
);