[JS IR] Add infra to test compilation with error

- add bunch of tests
 - fix help test

compiler/testData/codegen/boxError/semantic/unresolvedFunctionReferece.kt

@@ -0,0 +1,17 @@
+// ERROR_POLICY: SEMANTIC
+
+// FILE: t.kt
+
+
+fun foo() { bar() }
+
+// FILE: b.kt
+
+fun box(): String {
+    try {
+        foo()
+    } catch (e: IllegalStateException) {
+        return "OK"
+    }
+    return "FAIL"
+}