Generate parameters metadata for java 8 reflection

compiler/testData/codegen/java8/box/parametersMetadata/extensionFunction.kt

@@ -0,0 +1,19 @@
+// WITH_RUNTIME
+// FULL_JDK
+// KOTLIN_CONFIGURATION_FLAGS: +JVM.PARAMETERS_METADATA
+
+class A() {
+    fun String.test(OK: String) {
+
+    }
+}
+
+fun box(): String {
+    val clazz = A::class.java
+    val method = clazz.getDeclaredMethod("test", String::class.java, String::class.java)
+    val parameters = method.getParameters()
+
+    if (!parameters[0].isImplicit() || parameters[0].isSynthetic()) return "wrong modifier on receiver parameter: ${parameters[0].modifiers}"
+
+    return parameters[1].name
+}