feat(backend): added empty template for new mobile event

backend/pkg/handlers/ios/viewComponentDuration.go

@@ -0,0 +1,22 @@
+package ios
+
+import (
+	. "openreplay/backend/pkg/messages"
+)
+
+type viewComponentDuration struct {
+	//
+}
+
+func NewViewComponentDurations() *viewComponentDuration {
+	compBuilder := &viewComponentDuration{}
+	return compBuilder
+}
+
+func (b *viewComponentDuration) Handle(message Message, timestamp uint64) Message {
+	return nil
+}
+
+func (b *viewComponentDuration) Build() Message {
+	return nil
+}