feat: Waku v2 bridge

Issue #12610

vendor/github.com/anacrolix/missinggo/wait_event.go

@@ -0,0 +1,19 @@
+package missinggo
+
+import (
+	"reflect"
+	"sync"
+)
+
+func WaitEvents(l sync.Locker, evs ...*Event) {
+	cases := make([]reflect.SelectCase, 0, len(evs))
+	for _, ev := range evs {
+		cases = append(cases, reflect.SelectCase{
+			Dir:  reflect.SelectRecv,
+			Chan: reflect.ValueOf(ev.C()),
+		})
+	}
+	l.Unlock()
+	reflect.Select(cases)
+	l.Lock()
+}