Implemented fast search for invoke operator calls

#KT-13643 Fixed

idea/testData/search/references/testInvokeFun.kt

@@ -0,0 +1,10 @@
+class B(val n: Int) {
+    operator fun <caret>invoke(i: Int){}
+}
+
+fun f() = B(1)
+
+fun test() {
+    f(1).invoke(2)
+    f(2)(2)
+}