KT-6671 Report unused constructor parameters

#KT-6671 fixed

compiler/testData/diagnostics/tests/UnusedParameters.kt

@@ -0,0 +1,15 @@
+class C(a: Int, b: Int, c: Int, d: Int, <!UNUSED_PARAMETER!>e<!>: Int = d, val f: String) {
+    {
+        a + a
+    }
+
+    val g = b
+
+    {
+        c + c
+    }
+}
+
+fun f(a: Int, b: Int, <!UNUSED_PARAMETER!>c<!>: Int = b) {
+    a + a
+}