Optimize BitFlipPanel to suppress flicker when users switch between bit lengths (#640)

* Optimize BitFlipPanel

* remove namespace in cpp file

* improve localization + add tests

* add helper to compare ivector

* Modify how the control manages AutomationProperties::Name

src/CalcViewModel/Common/BitLength.h

@@ -0,0 +1,17 @@
+#pragma once
+
+namespace CalculatorApp
+{
+    namespace Common
+    {
+    public
+        enum class BitLength : int
+        {
+            BitLengthUnknown = -1,
+            BitLengthByte = 8,
+            BitLengthWord = 16,
+            BitLengthDWord = 32,
+            BitLengthQWord = 64,
+        };
+    }
+}