add browser-example-with-library maven project (kotlin->javascript)

libraries/examples/browser-example-with-library/src/main/kotlin/sample/Hello.kt

@@ -0,0 +1,16 @@
+package sample
+
+import kotlin.Pair
+import kotlin.browser.document
+import library.sample.*
+
+fun myApp() {
+    val element = document.getElementById("foo")
+    if (element != null) {
+        val p = Pair(10, 20)
+        val x = pairAdd(p)
+        val y = pairMul(p)
+        val z = IntHolder(100).value
+        element.appendChild(document.createTextNode("x=$x y=$y z=$z")!!)
+    }
+}

libraries/examples/browser-example-with-library/src/test/kotlin/sample/SampleTest.kt

@@ -0,0 +1,22 @@
+package test.sample
+
+import org.junit.Test as test
+import org.openqa.selenium.WebDriver
+import org.openqa.selenium.htmlunit.HtmlUnitDriver
+import org.openqa.selenium.By
+import java.io.File
+import kotlin.test.*
+
+open class SampleTest {
+    open val driver: WebDriver = HtmlUnitDriver(true)
+
+    test fun homePage(): Unit {
+        driver.get("file://" + File("sample.html").getCanonicalPath())
+        Thread.sleep(1000)
+
+        val foo = driver.findElement(By.id("foo"))!!
+        val text = foo.getText() ?: ""
+        println("Found $foo with text '$text'")
+        assertEquals("x=30 y=200 z=100", text.trim())
+    }
+}