Implement a reactive value

Not useful yet... I thought it would be but I changed my mind...
Need to think about this a lot more

utils/reactivevalue.go

@@ -0,0 +1,36 @@
+package utils
+
+type ReactiveValue[T any] struct {
+	V       T
+	subscribers []chan *T
+}
+
+func NewReactiveValue[T any](value T) *ReactiveValue[T] {
+	return &ReactiveValue[T]{
+		V:       value,
+		subscribers: make([]chan *T, 0),
+	}
+}
+
+func (rv *ReactiveValue[T]) Set(value T) {
+	rv.V = value
+	for _, subscriber := range rv.subscribers {
+		subscriber <- &value
+	}
+}
+
+func (rv *ReactiveValue[T]) Subscribe() chan *T {
+	subscriber := make(chan *T)
+	rv.subscribers = append(rv.subscribers, subscriber)
+	return subscriber
+}
+
+func (rv *ReactiveValue[T]) Unsubscribe(subscriber chan *T) {
+	for i, s := range rv.subscribers {
+		if s == subscriber {
+			rv.subscribers = append(rv.subscribers[:i], rv.subscribers[i+1:]...)
+			close(subscriber)
+			return
+		}
+	}
+}