KT-12852 Support breadcrumbs for Kotlin

#KT-12852 Fixed

idea/testData/codeInsight/breadcrumbs/Declarations.kt

@@ -0,0 +1,17 @@
+class Outer {
+    companion object {
+        class SomeClass : java.io.Serializable {
+            companion object CompanionName {
+                private object SomeObject {
+                    fun String.someFun(p: Int, b: Boolean): String {
+                        fun localFun() {
+                            val v = doIt(fun (x: Int, y: Char) {
+                                <caret>
+                            })
+                        }
+                    }
+                }
+            }
+        }
+    }
+}