Initial implementation of loop-to-call-chain intention

idea/testData/intentions/loopToCallChain/itAlreadyUsed.kt

@@ -0,0 +1,10 @@
+// WITH_RUNTIME
+fun foo(list: List<String>, it: Int) {
+    var found = false
+    <caret>for (s in list) {
+        if (s.length > it) {
+            found = true
+            break
+        }
+    }
+}