Add "Throwable not thrown" Inspection

#KT-11629 Fixed

idea/testData/inspectionsLocal/throwableNotThrown/when3.kt

@@ -0,0 +1,12 @@
+// PROBLEM: Result of 'createException' call is not thrown
+// FIX: none
+class FooException : RuntimeException()
+
+fun createException() = FooException()
+
+fun test(i: Int) {
+    val e = when (i) {
+        1 -> FooException()
+        else -> <caret>createException()
+    }
+}