JS frontend: added tests for nativeInvoke, nativeGetter, nativeSetter.

compiler/testData/diagnostics/testsWithJsStdLib/native/nativeSetter/onLocalExtensionFun.kt

@@ -0,0 +1,21 @@
+// !DIAGNOSTICS: -UNUSED_PARAMETER
+
+fun foo() {
+    [nativeSetter]
+    fun Int.set(a: String, v: Int) {}
+
+    [nativeSetter]
+    fun Int.set2(a: Number, v: String?) = "OK"
+
+    [nativeSetter]
+    fun Int.set3(a: Double, v: String?) = "OK"
+
+    <!NATIVE_INDEXER_WRONG_PARAMETER_COUNT!>[nativeSetter]
+    fun Int.set(<!NATIVE_INDEXER_KEY_SHOULD_BE_STRING_OR_NUMBER!>a: Any<!>): Int?<!> = 1
+
+    <!NATIVE_INDEXER_WRONG_PARAMETER_COUNT!>[nativeSetter]
+    fun Int.set2(): String?<!> = "OK"
+
+    <!NATIVE_INDEXER_WRONG_PARAMETER_COUNT!>[nativeSetter]
+    fun Int.set3(<!NATIVE_INDEXER_KEY_SHOULD_BE_STRING_OR_NUMBER!>a: Any<!>, b: Int, c: Any?)<!> {}
+}