Add inspections for implicit and explicit 'this' #KT-4580 Fixed

idea/testData/inspectionsLocal/explicitThis/nestedReceiversExtensionDifferentParameters.kt

@@ -0,0 +1,15 @@
+// WITH_RUNTIME
+// PROBLEM: none
+
+class Foo {
+    fun test() {
+        Bar().apply {
+            <caret>this@Foo.s("")
+        }
+    }
+}
+
+class Bar
+
+fun Foo.s(a: String) {}
+fun Bar.s() {}