Attach "add remaining branches" and "add else branch" fixes to NON_EXHAUSTIVE_WHEN warning #KT-12503 Fixed

idea/testData/quickfix/when/addRemainingBranchesEnumStatement.kt

@@ -0,0 +1,11 @@
+// "Add remaining branches" "true"
+// ERROR: Unresolved reference: TODO
+// ERROR: Unresolved reference: TODO
+enum class Color { R, G, B }
+fun use(c: Color) {
+    <caret>when (c) {
+        Color.R -> red()
+    }
+}
+
+fun red() {}