[JS IR] Generate JS Klib ABI tests

- add first test

compiler/testData/klibABI/removeFunction/main/m.kt

@@ -0,0 +1,16 @@
+
+fun test1(): String {
+    try {
+        return qux(true)
+    } catch(ex: Throwable) {
+        return "O"
+    }
+
+    return "FAIL2"
+}
+
+fun test2(): String = qux(false)
+
+fun box(): String {
+    return test1() + test2()
+}