Rename: Add quotes to declaration name if necessary

#KT-22708 Fixed

idea/testData/refactoring/rename/inplace/AddQuotes.kt

@@ -0,0 +1,5 @@
+fun <caret>foo() {}
+
+fun main(args: Array<String>) {
+    foo()
+}

idea/testData/refactoring/rename/inplace/AddQuotes.kt.after

@@ -0,0 +1,5 @@
+fun `is`() {}
+
+fun main(args: Array<String>) {
+    `is`()
+}