Implemented Operator To Function intention action.

Converts +a, --a, a * b, a..b, a %= b, a in b, etc. to their function call counterparts.

idea/testData/intentions/operatorToFunction/functionCallMultipleArgument.kt

@@ -0,0 +1,9 @@
+class bar() {
+    fun invoke(i: Any?, j: Any?) : Boolean {
+        return true
+    }
+}
+
+fun foo(i: Any?, j: Any?) {
+    val test = bar()<caret>(i, j)
+}