Initial implementation of loop-to-call-chain intention

idea/testData/intentions/loopToCallChain/flatMapWithBreak.kt

@@ -0,0 +1,14 @@
+// WITH_RUNTIME
+fun foo(list: List<String>): String? {
+    var result: String? = null
+    MainLoop@
+    <caret>for (s in list) {
+        for (line in s.lines()) {
+            if (line.isNotBlank()) {
+                result = line
+                break@MainLoop
+            }
+        }
+    }
+    return result
+}