Introduce "use expression body" inspection #KT-16063 Fixed

Converted from the relevant intention
Reported cases: one-liners, whens
Also, more exact caret detection in local inspection tests

idea/testData/inspectionsLocal/removeRedundantSpreadOperator/charArrayOf.kt

@@ -1,5 +1,5 @@
 fun foo(vararg x: Char) {}
 
 fun bar() {
-    foo(*charArrayOf<caret>('a', 'b'))
+    foo(*<caret>charArrayOf('a', 'b'))
 }