JSC. Add simple applications (#2449)

examples/js-common-playground/src/jsCommonMain/kotlin/web/events/Event.kt

@@ -0,0 +1,5 @@
+package web.events
+
+open external class Event(
+    type: String,
+)

examples/js-common-playground/src/jsCommonMain/kotlin/web/messaging/MessageEvent.kt

@@ -0,0 +1,7 @@
+package web.messaging
+
+import web.events.Event
+
+open external class MessageEvent(
+    type: String,
+): Event

examples/js-common-playground/src/jsMain/kotlin/wrappers/example/Main.kt

@@ -0,0 +1,9 @@
+package wrappers.example
+
+import web.events.Event
+import web.messaging.MessageEvent
+
+fun main() {
+    val event: Any = MessageEvent("data")
+    println(event is Event)
+}

examples/js-common-playground/src/wasmJsMain/kotlin/wrappers/example/Main.kt

@@ -0,0 +1,9 @@
+package wrappers.example
+
+import web.events.Event
+import web.messaging.MessageEvent
+
+fun main() {
+    val event: Any = MessageEvent("data")
+    println(event is Event)
+}