feature: init kotlin compose multiplatforme

composeApp/src/wasmJsMain/kotlin/eventDemo/app/Main.kt

@@ -0,0 +1,12 @@
+package eventDemo.app
+
+import androidx.compose.ui.ExperimentalComposeUiApi
+import androidx.compose.ui.window.ComposeViewport
+import kotlinx.browser.document
+
+@OptIn(ExperimentalComposeUiApi::class)
+fun main() {
+  ComposeViewport(document.body!!) {
+    App()
+  }
+}