Add "add type to callable reference LHS" quickfix to Code Cleanup

idea/testData/inspections/cleanup/cleanup.kt

@@ -54,3 +54,9 @@ fun foo() {
     B() + B()
     B() + B()
 }
+
+class C {
+    fun foo() {}
+
+    fun bar() = ::foo
+}

idea/testData/inspections/cleanup/cleanup.kt.after

@@ -53,3 +53,9 @@ fun foo() {
     B() + B()
     B() + B()
 }
+
+class C {
+    fun foo() {}
+
+    fun bar() = C::foo
+}